The last paragraph of section 4 of the Act to Regulate Commerce (Act Feb. 4, 1887, c. 104, 24 Stat. 380), as amended by Act June 18, 1910, c. 309, § 8, 36 Stat. 539, 547 (Comp. St. § 8566), declares that:

'Whenever a carrier by railroad shall in competition with a water route or routes reduce the rates on the carriage of any species of freight to or from competitive points, it shall not be permitted to increase such rates unless after hearing by the Interstate Commerce Commission, it shall be found that such proposed increase rests upon changed conditions other than the elimination of water competition.'

On August 21, 1916, Skinner and Eddy Corporation brought this suit in the District Court of the United States for the District of Oregon to enjoin an increase in carload rates on iron and steel products from Pittsburgh to Seattle. The United States, the commission, and sixteen railroads were joined as defendants. The bill charged that the action of the carriers in increasing their rates and that of the commission in authorizing such increase violated the above provision of the Commerce Act and, being beyond their respective powers, was void. The relief asked against the carriers was to prevent the collection of the proposed increased rates until the 'commission shall have held a hearing to determine whether the proposed increases rest upon changed conditions other than the elimination of water competition.' The relief asked against the commission was to prevent its taking any steps to enforce certain orders 'so far as the same permit' such increases. An application for an interlocutory injunction heard before three judges on December 29, 1916, was denied; and later the bill and a supplemental bill, filed December 16, 1916, were dismissed on the ground that they do not state any cause of action. The case comes here by direct appeal. The essential facts are these:

After the decision by this court in InterMountain Rate Cases, 234 U. S. 476, 34 Sup. Ct. 986, 58 L. Ed. 1408, and while the Sacramento Case (United States v. Merchants' & Manufacturers' Traffic Association, 242 U. S. 178, 37 Sup. Ct. 24, 61 L. Ed. 233) was pending in the District Court, carriers forming connecting lines between Pittsburgh and Seattle applied to the commission in the same proceeding for further modification of amended fourth section order No. 124, so as to permit a reduction in carload rates or iron and steel products from Pittsburgh to Seattle without making such reduced rates applicable to intermediate points of destination. An order granting leave for a reduction from 80 cents1 to 65 cents per 100 pounds was entered March 1, 1916. Rates on Iron and Steel Articles, 38 Interst. Com. Com'n R. 237. The carriers soon thereafter filed tariffs making that reduction effective April 10, 1916; and on that date, the 65-cent rate became operative.

During March, 1916, two applications had been made to the commission in the same proceeding on behalf of shippers to reopen for further consideration other fourth section applications of carriers concerning westbound transcontinental rates and for modification of orders issued thereon. The petitioners for such modification were the Spokane Merchants' Association and the Railroad Commission of Nevada, which had theretofore taken an active part in the proceedings. Railroad Commission of Nevada v. Southern Pacific Co., 21 Interst. Com. Com'n R. 329; Commodity Rates to Pacific Coast Terminals, 32 Interst. Com. Com'n R. 611. Their prayer was for removal of the existing discrimination in transcontinental freight rates against the intermountain territory and in favor of the Pacific Coast ports. The ground alleged for seeking the modification was that by reason of slides in the Panama Canal and the increased demand for shipping due to the world war, water competition, which had theretofore been held to justify lower rates to the Pacific Coast ports, had in large part disappeared. Thereupon the commission reopened on April 1, 1916, these applications, including that on which was entered the order of March 1, 1916, respecting iron and steel rates from Pittsburgh to Seattle; and a hearing was ordered 'respecting the changed conditions which are alleged in justification of a modification of the commission's orders.'

None of the railroads had requested the reopening of the applications or the hearing; and, when it was held, all opposed further modification of the transcontinental rates. No increased rates were proposed by them; and no specific increased rates were considered by the commission. The petitioners introduced evidence respecting the changed conditions as a basis for modifying the several fourth section orders. On June 5, 1916, the commission filed a report (Reopening Fourth Section Applications, 40 Interst. Com. Com'n R. 35), in which it found that while the Panama Canal had been meanwhile reopened, there was not then 'any effective water competition between the two coasts,' or likely to be any in the near future, and that 'the war and an unparalleled rise in prices for ocean transportation have so changed the situation as to transform a relation of rates which was justified when established to one that is now unjustly discriminatory against intermediate points.' It found also that these conditions were temporary. An order (amended July 13, 1916) was then entered, effective September 1, 1916, rescinding those previously entered on the several applications of carriers, including that of March 1, 1916, authorizing the 65-cent Pittsburgh-Seattle rate; and the carriers were directed to reduce the degree of discrimination then existing in favor of Pacific Coast ports as against intermediate territory.

Upon entry of this order the carriers filed tariffs effective September 1, 1916, raising, among others, the Pittsburgh-Seattle iron and steel rates from 65 cents to 94 cents. Promptly, on August 4, 1916, Skinner & Eddy Corporation protested, requested that the tariffs effective September 1, 1916, raising, had thereon, and alleged that the proposed increase violated, as later set forth in its bill of complaint, the last paragraph of the fourth section. Their request was not then granted. Thereafter, by action of the commission and the carriers, not necessary to detail, the effective date of the tariff fixing the 94-cent rate was postponed to December 30, 1916; and meanwhile these tariffs were, with consent of the commission, canceled upon the understanding that new tariffs fixing a 75-cent rate effective on that day would be filed. When the 75-cent rate was filed, Skinner & Eddy Corporation again protested on the same ground, and made, as theretofore, the same request for a suspension of the tariffs and a hearing; and again the request was not granted.

First. The defendants contend that the District Court did not have jurisdiction of the subject-matter of this suit; because orders entered in a fourth section proceeding cannot be assailed in the courts; at least, not until after a remedy has been sought under sections 13 and 15 of the Act to Regulate Commerce (Comp. St. §§ 8581, 8583). This contention proceeds apparently upon a misapprehension of plaintiff's position. If plaintiff had sought relief against a rate or practice alleged to be unjust because unreasonably high or discriminatory, the remedy must have been sought primarily by proceedings before the commission, Loomis v. Lehigh Valley Railroad Co., 240 U. S. 43, 50, 36 Sup. Ct. 228, 60 L. Ed. 517; Texas & Pacific Ry. Co. v. American Tie & Timber Co., 234 U. S. 138, 146, 34 Sup. Ct. 885, 58 L. Ed. 1255; The Minnesota Rate Cases, 230 U. S. 352, 419, 33 Sup. Ct. 729, 57 L. Ed. 1511, 48 L. R. A. (N. S.) 1151, Ann. Cas. 1916A, 18; Robinson v. Baltimore & Ohio Railroad Co., 222 U. S. 506, 32 Sup. Ct. 114, 56 L. Ed. 228; Baltimore & Ohio Railroad Co. v. Pitcairn Coal Co., 245 U. S. 481, 30 Sup. Ct. 164, 54 L. Ed. 292; and the finding thereon would have been conclusive, unless there was lack of substantial evidence, some irregularity in the proceedings, or some error in the application of rules of law; Manufacturers' Ry. Co. v. United States, 246 U. S. 457, 482, 38 Sup. Ct. 383, 62 L. Ed. 831; Pennsylvania Co. v. United States, 236 U. S. 351, 361, 35 Sup. Ct. 370, 59 L. Ed. 616; Los Angeles Switching Case, 234 U. S. 294, 311, 34 Sup. Ct. 814, 58 L. Ed. 1319; Kansas City Southern Ry. Co. v. United States, 231 U. S. 423, 440, 34 Sup. Ct. 125, 58 L. Ed. 296, 52 L. R. A. (N. S.) 1; Procter & Gamble Co. v. United States, 225 U. S. 282, 297, 298, 32 Sup. Ct. 761, 56 L. Ed. 1091; Interstate Commerce Commission v. Union Pacific Railroad Co., 222 U. S. 541, 32 Sup. Ct. 108, 56 L. Ed. 308. But plaintiff does not contend that 75 cents is an unreasonably high rate, or that it is discriminatory, or that there was mere error in the action of the commission. The contention is that the commission has exceeded its statutory powers; and that, hence, the order is void. In such a case the courts have jurisdiction of suits to enjoin the enforcement of an order, even if the plaintiff has not attempted to secure redress in a proceeding before the commission. Interstate Commerce Commission v. Diffenbaugh, 222 U. S. 42, 49, 32 Sup. Ct. 22, 56 L. Ed. 83; Louisiana & P. Ry. Co. v. United States (Com. C.) 209 Fed. 244, 251; Atlantic Coast Line R. Co. v. Interstate Commerce Commission (Com. C.) 194 Fed. 449, 451. Sacramento Case, supra, was a case of this character. Compare Interstate Commerce Commission v. Louisville & Nashville Railroad Co., 227 U. S. 88, 92, 33 Sup. Ct. 185, 57 L. Ed. 431; Southern Pacific Co. v. Interstate Commerce Commission, 219 U. S. 433, 31 Sup. Ct. 288, 55 L. Ed. 283. The District Court properly assumed jurisdiction of this suit.

Second. The defendants contend, also, that if the subject-matter was within the jurisdiction of a District Court of the United States, it was not within that of Oregon. The objection is based upon Act Oct. 22, 1913, c. 32, 38 Stat. 208, 219 (Comp. St. § 994), which declares:

'The venue of any suit hereafter brought to enforce, suspend, or set aside, in whole or in part, any order of the Interstate Commerce Commission shall be in the judicial district wherein is the residence of the party or any of the parties upon whose petition the order was made.'

And it is asserted that the parties upon whose petition the order was made are the Merchants' Association of Spokane, a resident of the Eastern district of Washington, and the Railroad Commission of Nevada, a resident of the district of Nevada. The applications of these parties, filed in March, 1916, were doubtless instrumental in securing a reopening of the proceedings which resulted in the order complained of. But the proceedings in which the order was made were the original application of carriers for relief under the fourth section. The report and the order are entitled, 'In the Matter of Reopening Fourth Section Applications.' One of for relief from the provisions of the fourth for relief rom the provisions of the fourth section was a resident of Oregon, namely, the Oregon-Washington Railroad & Navigation Company; and, as it was joined as defendant in the suit, the District Court of Oregon had jurisdiction over the parties.

Third. The main contention of plaintiff is that, as the carriers had in 1916 reduced the rate from 80 cents to 65 cents, neither the carriers nor the commission had power to increase the rate without a prior finding by the commission upon proper hearing 'that such proposed increase rests upon changed conditions other than the elimination of water competition,' and that no such hearing had been had or finding made.

In construing this provision it is important to bear in mind the limits of the commission's control over rates. Neither the Act to Regulate Commerce nor any amendment thereof has taken from the carriers the power which they originally possessed, to initiate rates; that is, the power, in the first instance, to fix rates or to increase or to reduce them.2 Legislation of Congress confers now upon the commission ample powers to prevent by direct action the exaction of excessively high rates. The original act, proceeding upon he common-law rule which prohibits public carriers from charging more than reasonable rates, gave the commission power to declare illegal one unduly high; but even after such a determination the commission lacked the power to fix the rate which should be charged. Cincinnati, New Orleans & Texas Pacific Ry. Co. v. Interstate Commerce Commission, 162 U. S. 184, 196, 197, 16 Sup. Ct. 700, 40 L. Ed. 935; Interstate Commerce Commission v. Cincinnati, New Orleans & Texas Pacific Ry. Co., 167 U. S. 479, 17 Sup. Ct. 896, 42 L. Ed. 243; Interstate Commerce Commission v. Alabama Midland Ry. Co., 168 U. S. 144, 161, 18 Sup. Ct. 45, 42 L. Ed. 414. Effective control was not secured until the act of 1906 (Act June 29, 1906, c. 3591, 34 Stat. 584) had given to the commission the power to fix, after such hearing, the rate which should be charged, Interstate Commerce Commission v. Humbolt Steamship Co., 224 U. S. 474, 483, 32 Sup. Ct. 556, 56 L. Ed. 849; and the act of 1910 had given it power to suspend, during investigation, tariffs for new rates, and placed upon the carrier the burden of proof to establish the reasonableness of the increased rates, M. C. Kiser Co. v. Central of Georgia Ry. Co. (D. C.) 236 Fed. 573.

Congress, however, steadfastly withheld from the commission power to prevent by direct action the charging of unreasonably low rates. The common law did not recognize that the rate of a common carrier might be so low as to constitute a wrong; and Congress has declined to declare such a rule. Despite the original Act to Regulate Commerce and all amendments, railroads still have power to fix rates as low as they choose and to reduce rates when they choose.3 The commission's power over them in this respect extends no further than to discourage the making of unduly low rates by applying deterrents. One such deterrent is found in the fact that low rates, because voluntarily established by the carrier, may be accepted by the commission as evidence that other rates, actual or proposed, for comparable service are unreasonably high. Board of Trade of Carrollton, Ga., v. Central of Georgia Ry. Co., 28 Interst. Com. Com'n R. 154, 164; Sheridan Chamber of Commerce v. Chicago, Burlington & Quincy Railroad Co., 26 Interst. Com. Com'n R. 638, 647. Compare Louisville & Nashville Railroad Co. v. United States, 238 U. S. 1, 11, et seq., 35 Sup. Ct. 696, 59 L. Ed. 1177. The voluntary making of unremuneratively low rates in important traffic may also tend to induce the commission to resist appeals of carriers for general rate increases on the ground of financial necessities. But the main source of the commission's influence to prevent excessively low rates lies in its power to prevent unjust discrimination. Compare Houston, East & West Texas Ry. Co. v. United States, 234 U. S. 342, 34 Sup. Ct. 833, 58 L. Ed. 1341. The order prohibiting the unjust discrimination, however, leaves the carrier free to continue the lower rate; the compulsion being that if the low rate is retained, the rate applicable to the locality or article discriminated against must be reduced. That is, the carrier may remove the discrimination either by raising the lower rate to the relative level of the higher, or by lowering the higher to the relative level of the lower, or by equalizing conditions through fixing rates at some intermediate point. American Express Co. v. Caldwell, 244 U. S. 617, 624, 37 Sup. Ct. 656, 61 L. Ed. 1352.

A special group of cases in which the commission may indirectly prevent unduly low rates through its power to prevent unjust discrimination is that provided for by the long and short haul clause. It was enacted to remedy one large class of discriminations by creating a legislative presumption that the charge of more for a short haul under substantially similar circumstances and conditions than for a longer distance over the same line in the same direction was unjust. As originally enacted, the provision was construed to authorize the carrier to determine primarily whether the required dissimilarity of circumstances and conditions existed and also to authorize the acceptance of competitive conditions as a justification of a lower rate for the longer distance. So construed, the provisions proved inefficacious, and the act was amended in §9§0 by striking out the 'substantially similar circumstances and conditions' clause and making the prohibition absolute except to 'the extent to which such designated common carrier may be relieved from the operation of this section' by the commission. Inter-Mountain Rate Cases, supra. But the lack of power to prevent by direct action excessively low rates remains; the carrier still having he option, if relief from the operation of the fourth section is denied, to keep in effect the low rate to the more distant point by lowering the rates to intermediate points.

The last paragraph of section 4, here in question, which was added by the act of 1910, was designed to prevent the railroads from killing water competition by making excessively low rates. But again Congress refrained from prohibiting the carrier to reduce the rate and declined to confer upon the commission power to prevent by direct action a reduction. The act still leaves the carrier absolutely free to make as low a rate as it chooses, and merely provides another deterrent, in declaring that, if the rate is once reduced in competition with a water route or routes, it cannot thereafter be increased, 'unless after hearing by the Interstate Commerce Commission it shall be found that such proposed increase rests upon changed conditions other than the elimination of water competition.' 'This provision may become operative in any case where there has been competition between a railroad and a water line, inland or coastwise. But we have now to determine merely whether the prohibition applies where the rates in question were reduced with the approval of the commission given after hearing, by order entered upon application of the carrier for relief from the operation of the fourth section.

The language of the paragraph is general and read alone might compel that construction. But it may not be read alone. It must be construed in the light of the purpose of its enactment, of the earlier paragraphs of section 4, and of other sections in the Act to Regulate Commerce designed to prevent unjust discrimination. The specific purpose of section 4 was to prevent discrimination by charging less for the longer haul, unless in the opinion of the commission the circumstances make such action just. Discrimination, just when sanctioned, may become unjust. Recognizing this fact, Congress most unjust. Recognizing this fact, Congress should be exercised 'from time to time' to determine 'the extent to which [the] * * * carrier may be relieved from the operation of this section.' In other words, the leave granted is not for all time. It is revocable at any time, either because it was improvidently granted or because new conditions have arisen which make its continuance inequitable. The specific purpose of the last paragraph of section 4 is to ensure and preserve water competition; to prevent competition that kills. A reduction made under the authority of a fourth section order after full hearing must have been found by the commission to have been reasonably necessary in order to preserve competition between the rail and the water carrier. A reduction so made is not within the reason of the prohibition declared by the last paragraph. Transportation conditions are not static; the oppressor of to-day may to-morrow be the oppressed. And in order to preserve competition between rail and water carriers it is necessary that the commission's power to approve a modification of rates be as broad as it is to approve a modification in order to prevent unjust discrimination. Even a literal reading of section 4 would not require that prohibition contained in the last paragraph be extended to reductions made with the approval of the commission. The preceding paragraph declares that:

'The commission may from time to time prescribe the extent to which such designated common carrier may be relieved from the operation of this section.'

The last paragraph is a part of the section. Why should not the commission's power to relieve be extended to it?

The construction contended for by plaintiff would rather ensure monopoly than preserve competition. If a rail rate reduced in competition with a water route for the avowed purpose of preserving competition by rail should result, contrary to the commission's expectations, in eliminating the water competition, because so low as to drive the water carrier out of business, then the prohibitively low rate would have to be continued permanently and other water competition be thereby prevented from arising; unless, perchance, some changed condition should develop which might make removal of the bar possible. Or, if the reduction if the rail rate, sanctioned by the commission under the fourth section as not unjustly discriminating against intermediate points, because forced upon the rail carriers by oppressive water competition designed to destroy its business to the port, should become thereafter unjustly discriminatory, because the water carrier, destroyed by its own rate cutting, abandoned the route, still the low rail rate and resulting discrimination would have to continue. Only compelling language could cause us to impute to Congress the intention to produce results so absurd; and the language of the last paragraph of section 4 is clearly susceptible of the more reasonable construction contended for by defendants.

Fourth. The defendants further contend that, even if the prohibition of the last paragraph of section 4 be construed to apply also where the reduction was made with the authority of the commission, the increase of the Pittsburgh-Seattle rate to 75 cents is valid, because the finding of the commission complies with the prescribed condition that the increased rate must rest 'upon changed conditions other than the elimination of water competition.' It found in terms that: 'The conditions formerly existing have materially changed;' that 'the withdrawal of boats from this [coast to coast] service has not been on account of the rates made by the rail carriers with which the boats compete, but on account of slides in the Panama Canal and the extraordinary rise in ocean freights;' that the substantial disappearance of water competition was merely temporary; that competing water carriers 'announced their intention ultimately to return to this service;' and 'that the time of such return depended in part upon the measure of the rates they would be able to secure for this service in competition with the rail lines.' It is clear that the changed conditions so found are something other than the 'elimination of water competition' which Congress intended should not justify raising the reduced rates. Compare American Insulated Wire & Cable Co. v. Chicago & Northwestern Ry. Co., 26 Interest. Com. Com'n R. 415, 416.

Fifth. The plaintiff attacks, however, the validity of the order of June 5, 1916 (amended July 13, 1916) also on the ground that it was not made upon application of the carrier—insisting that application by the carrier is not only a prerequisite to the original granting of relief under the fourth section, but also to the modification from time to time by the commission of the relief afforded. This court expressed in the Sacramento Case, supra, 242 U. S. at page 187, 37 Sup. Ct. 24, 61 L. Ed. 233, its doubt whether such application was a prerequisite even to the original granting of relief. It is clear that application by the carrier is not a prerequisite to modification. As shown above, orders granting relief under the fourth section are not grants in perpetuity. Neither a carrier nor a favored community acquires thereby vested rights. Necessarily implied in each such order is the term, 'until otherwise ordered by the commission'; and the original application is always subject to be reopened, as it was here.

The District Court did not err in dismissing the bill (and supplemental bill) on the merits; and its decree is

Affirmed.