White House press secretary Sarah Huckabee Sanders on Tuesday minimized House Democrats’ subpoenas of the Trump administration as “nothing more than a dog and pony show” and wouldn’t rule out the White House possibly blocking special counsel Robert Mueller from testifying before Congress.

During an interview with ABC News’ “The Investigation” podcast on Tuesday, Sanders said the White House has made no official moves to block Mueller from appearing before the House Judiciary Committee — which is tentatively set for May 15 — but said it will be discussed at some point.

“I think that’s a determination to be made at this point,” she told ABC. “[Trump’s tweets are] the President’s feeling on the matter and the reason is because we consider this as a case closed as a finished process.”

Trump tweeted over the weekend, appearing to advise the Justice Department that Mueller “should not testify,” but the White House has waffled on whether it intends to actually keep that from happening.