Dear righty, please be advised:

Impeachment proceedings aren't unconstitutional because ... ummm ... the entire process is laid out in ... wait for it ... the Constitution!
The House of Representatives is solely responsible for instituting any impeachment inquiry, therefore Republican Senate resolutions are nothing more than impotent tantrums.
An impeachable offense does NOT need to be a crime.
Trump has already admitted to acts in office which ARE crimes.
Closed-door hearings have long been the norm for House investigations. (A Republican Congress codified that.)
The Republican clown show which stormed a SCIF while waving their cell phones, will never again receive security clearances.
Donald Trump will go down in history as the Worst. President. Ever. You hitched your wagon to a Port-a-Potty vacuum truck, kids.

Bad move.