Federal Trade Commission Act § 9, 15 U.S.C. § 49. “When in 1914 Congress enacted the Federal Trade Commission Act, it had the advantage of knowing the Supreme Court’s [then] narrow construction of the [investigative power granted in] the Interstate Commerce Act and accordingly resorted to exceedingly broad language.” 1 K. Davis, Administrative Law Treatise § 3.03, at 169 (1958). The Supreme Court has since recognized the breadth of power to obtain information that is vested in the Commission by the FTC Act. United States v. Morton Salt Co., 338 U.S. 632, 70 S.Ct. 357, 94 L.Ed. 401 (1950);
see also Automatic Canteen Co. v. FTC, 346 U.S. 61, 79, 73 S.Ct. 1017, 97 L.Ed. 1454 (1953) ; FTC v. Tuttle, 244 F.2d 605, 610, 614 (2d Cir.), cert. denied,
354 U.S. 925, 77 S.Ct. 1379, 1 L.Ed.2d 1436 (1957) ; Moore Business Forms, Inc. v. FTC, 113 U.S.App.D.C. 231, 232, 307 F.2d 188, 189 (1962) (concurring opinion) ;
cf. Oklahoma Press Publishing Co. v. Walling, 327 U.S. 186, 66 S.Ct. 494, 90 L.Ed. 614 (1946) (upholding subpoenas issued under the Fair Labor Standards Act, which incorporates by reference Section 9 of the FTC Act). Appellant complains that “during the fifty-five year history of the Federal Trade Commission, the Commission has successfully utilized § 9 of the FTC Act to achieve satisfactory subpoena enforcement without once seeking nationwide service of process.” However, this may at least be partially explained by the fact that up until 1961 the Commission’s practice had been to hold hearings in various locations in the course of any one proceeding. And, of course, any location in which a hearing was held would be a place where the inquiry was carried on, for subpoena enforcement purposes. In 1961 the Commission amended its rules of practice to provide that all hearings be conducted at one place. FTC Rules of Practice, 16 C. F.R. § 3.41(b). Evidently, that “one place,” for reasons of administrative economy or otherwise, is often Washington, D. C. In any event, as the Supreme Court noted in
Morton Salt, supra, in a related context: 338 U.S. at 647, 70 S.Ct. at 366. Moreover, Commission subpoenas have previously been enforced in the District of Columbia against residents of other states without challenge being
made to the per*100sonal jurisdiction of the court.
See e. g. FTG v. Millers’ Nat’l Federation, 57 App.D.C. 360, 23 F.2d 968 (1927), on appeal after remand, 60 App.D.C. 66, 47 F.2d 428 (1931).
See also, FCC v. Stahlman, 40 F.Supp. 338 (D.D.C.1941), aff’d, 75 U.S.App.D.C. 176, 126 F.2d 124 (1942) where the Federal Communications Commission operating under a virtually identical subpoena power (18 U.S.C. § 409 (g)) successfully enforced a subpoena in the District of Columbia against a resident of Tennessee. Although we recognize that objections to personal jurisdiction may be waived, a reading of the above-cited cases, where subpoena enforcement was vigorously resisted on other grounds, suggests to us that if the parties there had believed that service of process was faulty, they would undoubtedly have pressed that objection.