Democratic lawmakers on Saturday gave the Internal Revenue Service a final deadline of April 23 to hand over President Donald Trump's tax returns, reports AFP.

"I am aware that concerns have been raised regarding my request and the authority of the Committee. Those concerns lack merit," House Ways and Means Committee Chairman Richard Neal said in a letter to IRS Commissioner Charles Rettig after an initial April 10 deadline lapsed.

Trump argues that he cannot release his tax returns because they are being audited.