We are not playing by the Marquis of Queensbury rules. We are dealing with the raw exercise of power. The Dems know that they are now the permanent majority party when it comes to control of the WH. They don't have to worry about the Reps controlling the Senate anytime soon.
The Reps are the Stupid Party and deserve every humiliation the Dems can perpetrate on them.
It's not a matter of "knowing how". It's a matter of political abuse.
Dems have no problem doing this because they favor dictatorships.
The GOP don't...they favor freedom. And rightly so.