To Republican Senators in Washington:
The whole world knows Donald Trump was guilty of insurrection when he organized his mob of followers, whipped them into a frenzy, and set them loose on the US Capitol on January 6. The whole world saw the results of his months of planning.
His impeachment for that crime began in the House of Representatives, and it is now up to the Senate to finish the process with a conviction and a bar to future candidacies. Your vote to convict does not start a new, unconstitutional action against a private citizen; it completes a process already begun against a US President. His change of address does not exonerate him and neither should you.
Do your jobs, uphold your oath* to defend the Constitution against all enemies, foreign and domestic, and convict the man who instigated the riot. The rioters themselves are being arrested and held accountable; the man who organized them and sent them to the Capitol is no less accountable.
If you do not convict him, you will have exonerated him. You will have consented to similar actions from future presidents. You will have left him free to continue fomenting anger and hate. You will have made clear your willingness to condone and support insurrection.
*US Senate Oath of Office:
I do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; that I take this obligation freely, without any mental reservation or purpose of evasion; and that I will well and faithfully discharge the duties of the office on which I am about to enter: So help me God.