Doesn’t POTUS have authority under the COTUS to call a joint session of Congress?
If so, Pelosi can’t win her little pissing contest. And could it be any more apparent that Pelosi is engaging in the lowest form of hackery?
Not in the House unless the House votes to extend the invitation, which means you aren't going to have all 435 members, the Senate chambers wouldn't fit them
His "rally" is his next best shot, which would be dismissed as just another Trump gym rally, wouldn't even draw coverage other than Fox
What we have here is a standoff, which although you will disagree, is all Trump's doing, he even said he'd be proud to own it