All the fencing and securing of perimeters isnt to keep Congress locked in it's to make sure leftists don't riot and actually storm the capitol when it turns out Trump will be President.
Why fortify DC so heavily if you are worried about Trump supporters? Shouldnt they be deployed to different state capitals where the right wingers live? DC is 95% democrat.
Remember those IEDs that were planted at the headquarters of the RNC and DNC on the 6th that have already been memory-holed by the media? They were supposed to go off and kill a bunch of people. Go back and listen to the speeches after Congress reconvened. The rhetoric about how 'terrible the events of today' were that sounds so off when compared with what actually happened would sound perfectly appropriate if their false flag bombings had happened as planned.