The clause dates back to 1689’s English Bill of Rights, which was designed to prevent the monarchy from using criminal and civil laws to bully legislators critical of the Crown.
The Democrats are attacking their opponents for challenging the results of the election, something that has occurred after every election by both sides for time and memorial.
I wonder how much longer they are going to try and make hay from Jan 6th? Probably right up until the midterms which is over a year away.
But it's not my fight anyways, I live in Canada now and we are going into our own election which will probably result in our own set of challenges, big lies and inquiries as canadian politicians seem to mirror the US political attack strategy.