No warrant? Secret Service should have treated them as intruders - and started shooting, if necessary.
They had a warrant. They refused to let the lawyer see it. Only let her see it from 10 feet away where you cant really read it
The simple fact that SS let them in with sketchy documents should give a clue as to loyalty of SS.
“asked staff to turn security cameras off –but they refused.”
First I’ve heard that they refused. If the cameras stayed on the FBI have perfected methods of getting around that.