Once again, Donald Trump has thrown the legal and political system into uncharted waters. This time, the novel question is this: Can the US Senate try and convict a former president? While there is some disagreement among legal scholars, the answer
must be yes, both as a matter of law and common sense.
https://www.cnn.com/2021/01/25/opinions/senate-trump-derail-impeachment-honig/index.html