Moderate House Republicans from high-tax blue states are warning senators that they will not give the “big, beautiful bill” a final stamp of approval if the Senate changes their proposal for the state and local tax (SALT) deduction cap.

The shot across the Capitol came shortly after Senate Majority Leader John Thune (R-S.D.) told reporters the upper chamber would likely tweak the SALT provision in the mammoth measure in one of several alterations.

The House bill raises the SALT deduction cap to $40,000 — quadruple the $10,000 deduction cap in current law. Several moderates in the House from New York, New Jersey and California have said they would not support the package unless it included substantial SALT relief.

Those members are now warning that any changes to the provision could prevent the bill from passing the House once it is sent back from the Senate.

“If the Senate unwinds the House’s $40K SALT deal, it’s like digging up buried radioactive waste—reckless and sure to contaminate the whole One Big Beautiful Bill,” Rep. Nick LaLota (R-N.Y.) wrote on social platform X. “Best to leave it alone.”

He elaborated on his comments later, telling reporters he would encourage the Senate to keep their deal in place.

“The reason I’ve chosen that analogy is because the House took four months to get to where we could finally compromise, negotiate and settle on bill language as it relates to SALT and other interlocking and related provisions. So the Senate to disrupt that is to........

© The Hill