; and (2) if the Secretary concurs with the determination of the Federal entity, submit to the President and the Commission a report identifying for reallocation the frequencies with respect to which the Federal entity made the determination. (b) Clearing of spectrum The President shall— (1) not later than 180 days after the Secretary submits a report under subsection (a)(2), begin the process of withdrawing or modifying the assignment to a Federal Government station of the frequencies identified in such report; and (2) not later than 30 days after completing the withdrawal or modification, notify the Commission that the withdrawal or modification is complete. (c) Reallocation and auction (1) In general The Commission shall— (A) reallocate the frequencies identified in a report under subsection (a)(2) for non-Federal use or shared Federal and non-Federal use, or a combination thereof; and (B) notwithstanding paragraph (15)(A) of section 309(j) of the Communications Act of 1934 ( 47 U.S.C. 309(j) ), not later than January 1, 2026, begin a system of competitive bidding under such section to grant new initial licenses for the use of such frequencies, subject to flexible-use service rules. (2) Proceeds to cover 110 percent of Federal relocation or sharing costs Nothing in this section shall be construed to relieve the Commission from the requirements of section 309(j)(16)(B) of the Communications Act of 1934 ( 47 U.S.C. 309(j)(16)(B) ). (d) Auction authority Section 309(j)(11) of the Communications Act of 1934 ( 47 U.S.C. 309(j)(11) ) is amended— (1) by striking the period at the end and inserting ; and ; (2) by striking except that, with respect to and inserting except that— (A) with respect to