Well then he will not be on the ballot, because we KNOW he is never releasing those tax returns. 

Courtesy of NYT:

President Trump will not be eligible for California’s primary ballot unless he releases his tax returns, under a new law signed by Gov. Gavin Newsom on Tuesday.

The law requires that all presidential candidates release their tax returns in order to be placed on the ballot for the state’s primary next year, in a move that will almost certainly lead to legal challenges. Mr. Newsom’s decision to sign the legislation seemed designed to escalate a running feud between the White House and California.

The state is currently involved in more than 40 lawsuits with the Trump administration on issues ranging from environmental regulation to immigration.

The California State Legislature approved a similar measure in 2017, but Gov. Jerry Brown vetoed it, questioning whether it was constitutional. Mr. Brown, who left office in January, also said it would create a precedent for requiring other information — including medical records or certified birth certificates — from candidates.

Mr. Newsom sent mixed messages on whether he would sign the law, but finally did so on the final day before the bill would become law without his signature. The legislation does not explicitly cite Mr. Trump, but lawmakers made no secret that he was the target when they passed the bill along party lines.

I think Jerry Brown had a good point about the constitutionality of this law.

But I am still glad that California is drawing a line in the sand, and who knows, it might just survive a legal challenge.

Ultimately in Trump’s case it probably does not matter all that much because there is no fucking way he is ever going to win California.

But there are a number of similar bills moving forward in nearly a dozen states including New York, New Jersey, Washington and Pennsylvania

If a number of those follow suit then Trump could find himself locked out of five or more states, and THAT could essentially kneecap him in the 2020 election.