On Wednesday, the tax firm Mazars USA said they are ready to turn over 10 years of President Donald Trump’s tax returns, according to Politico.

Mazars USA said they wanted the House Oversight and Reform Committee to issue a subpoena in order to make the process formal.

“Rep. Elijah Cummings (D-MD) told reporters that Mazars USA, a tax and accounting firm, has asked the committee for a so-called ‘friendly’ subpoena so that it can formalize the process of complying with the panel’s request,” the report said.

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“They have told us that they will provide the information pretty much when they have a subpoena. And we’ll get them a subpoena,” Cummings told reporters.

The request comes after Cummings launched a wide-ranging probe into Trump’s finances. Republicans have attacked the investigation as an effort to “solely embarrass President Trump and to advance the relentless Democrat attacks upon the Trump administration,” the report said.