Trump is going through another impeachment
Trump is no longer POTUS
Article 1, Section 2, clause 5 states that impeachment is specifically for Federal officers and judges
https://constitution.congress.gov/browse/essay/artI-S2-C5-1-1/ALDE_00000030/
Trump is currently none of these things, so how is this possible?
Or, if Trump is still POTUS
Article 1, Section 3, clause 6 says that the Chief Justice shall preside over the trial
https://constitution.congress.gov/browse/article-1/
Leahy is presiding, not Roberts, so how is this possible?