The president-elect’s nominee for White House budget director reiterated that Trump believes law protecting Congress’ funding power is unconstitutional.

Russ Vought wouldn’t commit to having the federal government spend all the money Congress approves.

The issue came up during his Senate confirmation hearing Wednesday, where he testified before lawmakers in pursuit of a second tour as White House budget director for President-elect Donald Trump.

Vought famously froze aid to Ukraine and Puerto Rico the first time he ran the Office of Management and Budget during the first Trump administration. Now that Trump is claiming so-called “impoundment” law is unconstitutional, senators in both parties are eager to hear Vought promise to spend federal cash as Congress intends.