While this is true, there is no dispositive ruling on the totality of criminal procedural law as it applies to impeachment. The 1936 impeachment of Judge Ritter was the first point a defendant in an impeachment trial appealed to a court to assert his procedural/constitutional rights had been denied by the Senate. It is clear there are procedural requirements the Senate must honor, but the full extent is not clearly defined. For a decent review of the area as it stood in 1993, prior to the Clinton trial, see [0].
0 —> https://digitalcommons.law.umaryland.edu/cgi/viewcontent.cgi...