Treasury Secretary Steven Mnuchin said he did not know if Treasury’s legal department was reviewing whether he or IRS Commissioner Charles Rettig should be the one to make the decision on whether to hand over President Donald Trump’s tax returns to House Ways and Means Committee Chairman Richard E. Neal.

Mnuchin was quizzed about his reaction to Neal’s April 3 letter requesting six years of the president’s tax returns at a hearing Tuesday of the House Appropriations Financial Services subcommittee by the panel’s chairman Mike Quigley, an Illinois Democrat.

[Ways and Means chairman asks for Trump’s tax returns]

Quigley maintained, as former Treasury Secretary Lawrence Summers did in an opinion piece Monday that ever since a 1982 order, the Treasury Secretary has delegated tax administration and enforcement to the IRS commissioner and that would include the decision on the president’s tax returns.

“I want to acknowledged that we did receive the request and as I’ve said in the past …it would be reviewed by our legal department,” Mnuchin said. “It would be premature for me to comment on what they are reviewing on.”