Good grief. You can't fire 500+ members of the National Security Council. You can't do it...you need continuity. Next, Obamacare passed because the democrats had 60 votes in the Senate to pass Obamacare. They needed 60 votes and got it. The republicans have only 53 votes in the senate and they would have needed 60.
There was no hope of changing the 60 vote threshold since since at least 3 republicans said they would not vote to change the rules...this was when the republicans had 51 seats.