UPDATE 1-Trump sues to block subpoena for financial information

U.S. President Donald Trump on Monday sued to block a subpoena issued by the Democratic chairman of the U.S. House Oversight Committee that sought information about his personal and business finances.

The subpoena sought eight years of documents from Trump and several of his businesses, lawyers for Trump and the Trump Organization said in a court filing. Elijah Cummings, the House Oversight Committee chairman, issued the subpoena to the president's accountant after Trump's former lawyer testified that Trump had inflated assets.

"Chairman Cummings' subpoena is invalid and unenforceable because it has no legitimate legislative purpose," the lawyers wrote. The White House did not immediately respond to a request for comment, and the U.S. House Oversight Committee did not immediately have a response.

(Reporting by Makini Brice; Additional reporting by Alexandra Alper and Ginger Gibson; Editing by Tim Ahmann and Meredith Mazzilli)