California’s Supreme Court is considering Wednesday whether President Donald Trump must disclose his tax returns if he wants to be a candidate in the state’s primary election next spring.

The high court is hearing arguments even though a federal judge already temporarily blocked the state law requiring presidential candidates to release their tax returns in order to be included in the state’s primary.

The justices’ consideration comes the same week that a federal appeals court in New York ruled that Trump’s tax returns can be turned over to state criminal investigators there, although that ruling is expected to be appealed to the U.S. Supreme Court.

The California Republican Party and chairwoman Jessica Millan Patterson filed the state lawsuit challenging Democratic Gov. Gavin Newsom’s signing in July of the law aimed at the Republican president.

It’s a clear violation of the California Constitution, opponents argued, citing a 1972 voter-approved amendment they said guarantees that all recognized candidates must be on the ballot.

Previously, “California politicians rigged the primary election, putting up ‘favorite son’ nominees for partisan political advantage,” they wrote, suggesting that Democratic lawmakers are doing the same thing now by different means.