WASHINGTON - Exxon Mobil (NYSE:XOM) Corp., the largest U.S. oil company, spent more than $16.9 million to lobby the federal government in 2007, according to a disclosure form.

The company lobbied on various appropriations bills and on legislation dealing with Federal Aviation Administration reauthorization, patent reform, taxes and royalties, international relations and trade agreements, lobbying reform, railroad security and more, according to the form posted online Feb. 14 by the Senate's public records office.

Irving, Texas-based Exxon Mobil spent $10.5 million in the second half of 2007 to lobby on those issues.

The energy bill President Bush signed in December did not include billions of dollars in higher taxes for large oil companies that many Democrats wanted to use to fund tax breaks for various clean energy (NASDAQ:CLNE) industries. Similar proposals were revived earlier this month and are working their way through Congress.

Besides Congress, Exxon Mobil lobbied the White House, Federal Energy Regulatory Commission, U.S. Trade Representative's office, the departments of Energy, Defense, Interior, State, Commerce, Homeland Security and more.

Lobbyists are required to disclose activities that could influence members of the executive and legislative branches, under a federal law enacted in 1995.