Issue(s): (1) Whether Congress violated the nondelegation doctrine by authorizing the Federal Communications Commission to determine, within the limits set forth in 47 U.S.C. § 254, the amount that providers must contribute to the Universal Service Fund; (2) whether the FCC violated the nondelegation doctrine by using the financial projections of the private company appointed as the fund's administrator in computing universal service contribution rates; (3) whether the combination of Congress's conferral of authority on the FCC and the FCC's delegation of administrative responsibilities to the administrator violates the nondelegation doctrine; and (4) whether this case is moot in light of the challengers' failure to seek preliminary relief before the 5th Circuit.