George Washington University law professor Jonathan Turley said Monday that the judge in the Trump business records trial violated ethics rules with his donation to President Joe Biden’s 2020 election campaign, and questioned why he was presiding over the case at all.

Merchan made a $15 donation to Biden’s election campaign in 2020, a $10 donation to a group called “Stop Republicans” and a $10 donation to a “Progressive Turnout Project,” according to data from the Federal Election Commission (FEC). Turley said that the small size of the donation was irrelevant.

“It is very clear, they say you can’t make political contributions and he did,” Turley said on “Fox and Friends” after co-host Ainsley Earhardt mentioned the donations. “And the fact it is ‘de minimus’ or small, really, I think, misses the point. You make donations to show your support, that is what that $15 did.”