shall mint and issue coins described in section 5112 of this title in amounts the Secretary decides are necessary to meet the needs of the United States;

may prepare national medal dies and strike national and other medals if it does not interfere with regular minting operations but may not prepare private medal dies;

may prepare and distribute numismatic items; and

may mint coins for a foreign country if the minting does not interfere with regular minting operations, and shall prescribe a charge for minting the foreign coins equal to the cost of the minting (including labor, materials, and the use of machinery).