Three legal veterans on Tuesday backed newly signed state legislation that would require President Donald Trump, and any other presidential candidate, to disclose their income tax returns in order to appear on California’s 2020 ballot.

Boies Schiller Flexner chairman David Boies; Gibson, Dunn & Crutcher partner Theodore Boutrous Jr.; and UC Berkeley School of Law Dean Erwin Chemerinsky all supplied short opinions asserting the constitutionality of the new law in a media release from Gov. Gavin Newsom’s office.