The Trump administration indicated Monday it wants to block former White House counsel Don McGahn from testifying before the House Judiciary Committee.

President Donald Trump intends to have McGahn defy a congressional subpoena and skip a Tuesday morning hearing, the latest move in an ongoing battle between the administration and House Democrats.

In a letter to committee chairman Rep. Jerry Nadler (D-N.Y.), current White House counsel Pat Cipollone said McGahn is “absolutely immune” from being compelled by Congress to testify about his time as White House counsel.