They don’t “control” the Senate. You need 60 seats in the Senate if the other party is willing to filibuster everything, and boy howdy are both parties willing to these days. If the GOP did have 60 seats, then they’d be able to pass that clean bill over the filibuster of the Democrats.
I didn’t say they have a filibuster proof majority in the senate, ‘control’ is just a bare majority because at that point you can bring up whatever legislation you want for votes.
