Don't fall for it, folks, they don't have to pass this bill today "or else."
It's called draft a bill both democrats and republicans can agree on...You know, so it doesn't get scrapped in a few years and has an easier route through congress.
You are right. They don't have to pass it today "or else". Obama thought that after a month he was going to be able to get the ACA done in the first 45 days, but when it came up to the first vote, they saw there was much work to be done, so they delayed it until the summer session and finally passed it a year later.
Trump wanting to quit this early in the game shows us that he's not really interested in running the country, just getting the fame and stirring things up.