Section 7 of the Clayton Act prohibits mergers or acquisitions 'the effect of [which] may be substantially to lessen competition, or to tend to create a monopoly,' in any 'line of commerce or in any activity affecting commerce in any section of the country.' 15 U.S.C. § 18. When the FTC has 'reason to believe that a corporation is violating, or is about to violate, Section 7 of the Clayton Act,' it may seek a preliminary injunction under Section 13(b) of the FTC Act to 'prevent a merger pending the Commission's administrative adjudication of the merger's legality.' FTC v. Staples, Inc., 970 F. Supp. 1066, 1070 (D.D.C. 1997) (citing 15 U.S.C. § 53(b)); see also Brown Shoe v. U.S., 370 U.S. 294, 317, 82 S. Ct. 1502, 8 L. Ed. 2d 510 (1962) ('Congress saw the process of concentration in American business as a dynamic force; it sought to ensure the Federal Trade Commission and the courts the power to brake this force . . . before it gathered momentum.') 'Section 13(b) provides for the grant of a preliminary injunction where such action would be in the public interest-as determined by a weighing of the equities and ...