The Democratic governors of New York and California staked their opposition to the GOP's tax reform plan on Friday, saying the plan would lead to major tax increases for residents in their states.

In a joint conference call with reporters, Govs. Andrew Cuomo (N.Y.) and Jerry Brown (Calif.) accused the Trump administration of using the tax code to punish blue states that supported Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE in November.

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Brown slammed proposed changes to corporate taxes, accusing Republicans of orchestrating a transfer of wealth from middle-income Americans to corporations.

"Very simply, this is an income transfer from people, human beings, men, women and children, to the impersonal entity called corporations," he said.

“This is an attack on California, New York and New Jersey, and other states that would not vote for Trump,” Brown added. “It’s a gross manipulation of our tax code.”

The governors took issue with the GOP's plan to eliminate state and local tax deductions, saying the move would adversely affect their states and warning of an exodus of wealthy residents.

“Higher-income people will move,” Cuomo said Friday.

In a separate statement, Cuomo's office said that eliminating the deductions would lead to an average increase of $5,300 for middle-income New Yorkers.

During the call, Cuomo accused Republican lawmakers of ignoring their constituents, arguing that the plan would fail easily if lawmakers voted the way their constituents want.

"So for those Congresspeople the question is, are you more loyal to your district or are you more loyal to your political party boss?" Cuomo asked.

"Maybe it's a confusing topic and people don't understand it today, but I guarantee you they will understand it a year from today when they walk into an election booth."

Rep. Kevin Brady Kevin Patrick BradyBusinesses, states pass on Trump payroll tax deferral Trump order on drug prices faces long road to finish line On The Money: US deficit hits trillion amid pandemic | McConnell: Chance for relief deal 'doesn't look that good' | House employees won't have payroll taxes deferred MORE (R-Texas), the chairman of the House Ways and Means Committee, has said that he anticipates announcing a compromise on the deductions next week.