https://www.nationalreview.com/2021/01/trump-trial-puts-fundamental-question-to-chief-justice-roberts/
It’s a murky situation that could see none other than Vice President Harris preside.
B efore the Senate holds an impeachment trial, as many conservative and liberal writers advise, it should understand the serious constitutional issues at stake. Chief among them is whether the Senate can try a defendant who has left office. Another one, less noticed, is who would serve as the trial judge. Carefully read, the constitutional text may even allow the chief justice of the Supreme Court to scuttle the whole affair, or at the very least open up a political minefield that could cripple the new administration. The Senate would better serve the national interest simply by allowing Donald Trump to depart — which, after all, is the main objective of impeachment — rather than holding a long trial solely to disqualify him from future office.
We have written before about the constitutional challenges to impeaching Trump. He was involved in the odious attack on the Capitol during the January 6 counting of the Electoral College votes. But the current rush to impeach and try Trump may imperil multiple constitutional values.
First, the House carried out a hasty impeachment — two days — that charged Trump with the wrong crime. Convicting Donald Trump of “incitement” to insurrection will debase both the crime of incitement — which our courts have long read narrowly to protect vital free-speech values — and the meaning of insurrection. We would not give the criminals and miscreants who attacked the Capitol the higher status of insurrectionists who had ideological goals in mind.