California Gov. Gavin Newsom Gavin NewsomOVERNIGHT ENERGY: California seeks to sell only electric cars by 2035 | EPA threatens to close New York City office after Trump threats to 'anarchist' cities | House energy package sparks criticism from left and right California seeks to sell only electric cars by 2035 EPA head questions connection of climate change to natural disasters MORE (D) is reportedly planning to appeal a court ruling that blocks the state from enforcing a law that would require presidential candidates to release their income tax returns in order to appear on the state’s primary ballot.

Newson on Tuesday informed a federal court of his intention, CNN reported, noting that the appeal would be filed in the Ninth Circuit. The governor's office did not immediately respond to a request for comment from The Hill.

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U.S. District Judge Morrison England Jr. last week temporarily blocked the law, issuing a written opinion arguing that the legislation Newsom signed earlier this year is likely unconstitutional.

Under the "Presidential Tax Transparency and Accountability Act," candidates running for president or for governor of California would be required to file copies of the last five years of their tax returns to the California secretary of State in order to appear on the ballot.

The legislation gained national attention given President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE's refusal to disclose his tax returns during the 2016 election cycle, a decision that broke with longstanding precedent.

Trump has claimed that he hasn't released his income tax returns because he is under audit. But the IRS has stated audits don't preclude candidates from providing their returns.

Trump's legal team, along with the Republican National Committee, challenged the California law in court, arguing that the state did not have the authority to add qualifications to running for president.

In his ruling last week, Morrison said that the state law raised "both legitimate and understandable" concerns. But he said that it was "not the job of the courts, however, to decide whether a tax return disclosure requirement is good policy or makes political sense," the Associated Press noted.

"Instead, it is the court's job to make sure the Constitution wins," he said.

California Secretary of State Alex Padilla said previously that the state would appeal the ruling.

"We will continue to make our thorough, thoughtful argument for stronger financial disclosure requirements for presidential and gubernatorial candidates,” he said.

“Our elected leaders have a legal and moral obligation to be transparent with voters about potential conflicts of interest. This law is fundamental to preserving and protecting American democracy.”