“Does Biden undergo the “necessary” procedures?”
Of course not. He takes private jets just like all the political elite. It is only for the masses, don’t you know? The little people. (sarc).
Biden is a big Amtrak guy. You can still waltz on a train at the last second w/o showing anything but a ticket, which makes it much more convenient than flying. Obviously you can’t turn a train into a flying missile but you still have a bunch of people trapped in an enclosed space.