Senate Majority Leader Mitch McConnell said Wednesday he is open to giving Americans flexibility to deduct certain taxes, as the Senate and House prepare to iron out differences and write a single tax bill to send to President Donald Trump.

The bills that have passed each chamber would eliminate state and local tax deductions, with the exception of up to $10,000 in property taxes.

Lawmakers including Rep. Mimi Walters, a California Republican, are pressing for changes to the final bill. In a radio interview Wednesday morning, McConnell said it’d be “reasonable” to apply the deduction to income taxes.

“There’s some in the House who would like to see that applied not just to property, but to income tax, you know, where you can sort of pick which state and local tax you want to deduct. That sounds like a kind of reasonable idea,” the Kentucky Republican told host Hugh Hewitt.

See: The Trump tax calculator — will you pay more or less?

A spokesman for Walters said the congresswoman is “pleased to see that her concerns are being seriously considered by members of both chambers of Congress.”

McConnell told Hewitt it was “impossible” to predict exactly how the final bill will turn out.

The House named members of the conference committee on Monday, and the Senate is expected to follow suit soon. Trump and congressional Republicans are aiming to wrap up work on taxes by the end of the year.

Also see: These are the House lawmakers who will hammer out a final tax bill with senators.