If this goes to the Senate for trial, then the Chief Justice presides over the trial.
I've heard that Roberts CANNOT - he is a material witness since he is entirely responsible for the FISA court and the FISA warrants are central to the case.
Any lawanons who can verify?
I've also read that it MUST be the Chief Justice, so Roberts cannot merely recuse himself.
Another Chief Justice must be appointed.
Trump gets acquitted and gets to pick a new CJ - Maybe replace if Roberts has to step down.
First, the Congress investigates. This investigation typically begins in the House Judiciary Committee, but may begin elsewhere. For example, the Nixon impeachment inquiry began in the Senate Judiciary Committee. The facts that led to impeachment of Bill Clinton were first discovered in the course of an investigation by Independent Counsel Kenneth Starr.
Second, the House of Representatives must pass, by a simple majority of those present and voting, articles of impeachment, which constitute the formal allegation or allegations. Upon passage, the defendant has been "impeached".
Third, the Senate tries the accused. In the case of the impeachment of a president, the Chief Justice of the United States presides over the proceedings. For the impeachment of any other official, the Constitution is silent on who shall preside, suggesting that this role falls to the Senate's usual presiding officer, the President of the Senate who is also the Vice President of the United States. Conviction in the Senate requires a two-thirds supermajority vote of those present. The result of conviction is removal from office.
https://en.wikipedia.org/wiki/Impeachment_in_the_United_States
So it is the CJ.
The question is will the FISA abuse and the FISC rubber stamp be enough to reach Roberts?
He is entirely responsible for the FISC.
Appointment process
The court's judges[27] are appointed solely by the Chief Justice of the United States without confirmation or oversight by the U.S. Congress.[28]
https://en.wikipedia.org/wiki/United_States_Foreign_Intelligence_Surveillance_Court#Appointment_process