The U.S. government said it is spending more than $7 million a year to maintain a superyacht it seized from a sanctioned Russian oligarch Suleiman Kerimov. They urged a judge to let it auction the vessel before a dispute over its ownership is resolved, according to Reuters. Attempts to sell the yacht at auction are being contested by Eduard Khudainatov, who formerly headed the Russian state oil and gas company Rosneft. He claims ownership of the Amadea and asserts that it cannot be confiscated since he is not subject to sanctions. Federal prosecutors informed U.S. District Judge Dale Ho that t…