It looks like Trump already did that.

https://www.cnn.com/2025/03/22/politics/who-is-judge-james-boasberg/index.html

In a series of social media posts, Trump smeared Boasberg as a “Radical Left Lunatic Judge” and called for his impeachment

https://en.wikipedia.org/wiki/James_Boasberg

James Emanuel “Jeb” Boasberg (born 1963)[2] is an American lawyer and jurist who is the chief judge of the United States District Court for the District of Columbia. Appointed by President George W. Bush, he served as a judge of the Superior Court of the District of Columbia from 2002 to 2011, before Barack Obama nominated him to the US district court for the District of Columbia. Chief Justice John G. Roberts appointed him to the United States Foreign Intelligence Surveillance Court (FISC) in 2014, and he served as the presiding judge of the FISC from 2020 to 2021. In 2020, he was appointed to the United States Alien Terrorist Removal Court and designated chief judge.

If he’s “radical left”, no doubt this is all part of some sort of grand conspiracy between President Bush, President Obama, and conservative Chief Justice John G. Roberts to infiltrate communists into high positions in the government.