A prominent California Democrat is offering a bill in the state Senate to blunt potential tax increases state residents may see as a result of the recently passed federal tax law.

The measure from Kevin de León, president pro tempore of the California Senate, would let Golden State residents make charitable donations to a state fund and receive a dollar-for-dollar tax credit for the donations. The donations would be deductible from federal taxes.

De León, who is challenging incumbent Sen. Dianne Feinstein Dianne Emiel FeinsteinSenators offer disaster tax relief bill Democrats back away from quick reversal of Trump tax cuts Congress must save the Postal Service from collapse — our economy depends on it MORE (D) in the primary, is offering the bill in response to the limits the new tax law places on the state and local tax deduction. The deduction is capped at $10,000 starting in 2018. That is expected to be harmful to a number of residents of California and other high-tax states.

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A fact sheet from de León's office notes that California and other states already have various tax credits for charitable contributions. The California legislature in 2014 passed a measure that gives people a tax credit for donations to a state higher education grant program. Additionally, other states offer credits for contributions to private schools.

But tax experts have said the IRS might challenge arrangements like the one de León is proposing.

De León's bill is one of several efforts that elected officials in high-tax states are taking to mitigate possible federal tax increases facing their residents.

New York Gov. Andrew Cuomo (D) said Wednesday that he is also looking into creating charitable organizations and is also looking at shifting toward a payroll-tax system. Cuomo also said he is planning a court challenge to the new tax law.