House Judiciary Chairman Rep. Jerry Nadler, D-N.Y., pitched fining officials who ignore congressional subpoenas.

Nadler made the suggestion at a meeting of House leaders earlier this month, Bloomberg reported Wednesday. Nadler also went a step further and brought up the possibility of jailing Trump administration officials if they are found in contempt of Congress. Nadler admitted that plan is less realistic.

Democrats have issued multiple subpoenas this year, demanding six years of Trump’s tax returns and testimony from administration officials, who have thus far declined to appear in front of Congress.

The administration has called the requests an unconstitutional infringement on Trump’s rights as president and is planning to fight back.

Congress can hold people in contempt if they refuse to testify or produce documents, however, the matter is then passed on to the Justice Department “whose duty it shall be to bring the matter before the grand jury for its action,” according to the law.