Democrats on the Senate Finance Committee on Tuesday grilled President Trump’s nominee to become the next commissioner of the Internal Revenue Service. Under questioning from Massachusetts Senator Elizabeth Warren, former Missouri Republican Congressmember Billy Long refused to state that it’s illegal for the president to weaponize the IRS against his political opponents.

Sen. Elizabeth Warren: “Is it illegal for the president to instruct the IRS to remove nonprofit status from a taxpayer?”

Billy Long: “I’m not going to have the answer that you need. I apologize. But like I said” —

Sen. Elizabeth Warren: “Why are you not having the answer?”

Meanwhile, Oregon Senator Ron Wyden said his staff has at least two recordings of Long’s business associates saying they expect to get favors from the IRS once Long is installed as its commissioner.