California Gov. Gavin Newsom has reportedly decided to sign a controversial bill requiring that all presidential candidates publish their tax returns to appear on the state’s primary ballot.

The bill is targeted at President Donald Trump, who has not published his tax returns.

California will require presidential candidates to hand over their tax returns in order to appear on the state’s primary-election ballot, setting up a likely legal conflict with President Trump over his continued refusal to disclose any tax documents.

Under a law signed Tuesday by Gov. Gavin Newsom, candidates must turn over five years of tax returns at least 98 days before the March 3 primary. The state would then release a redacted version of the documents.

California Gov. Gavin Newsom embraced a politically explosive and legally dubious attempt to pry loose President Donald Trump’s tax returns on Tuesday, signing legislation that would boot Trump from California primary ballots if he doesn’t make his filings public.