Calling what Obama had a "supermajority" is revisionist history. At best, it was like 20 working days of exactly 60 votes (e.g. due to the Al Frank stuff). If even one Dem didn't go along with it (which for a somewhat nuanced issue like abortion back in 2009 - definitely a possibility) even then it wasn't possible.
So acting like there was some all-powerful supermajority is ignorant at best, misinformation at worst.
Obama in 2009 (the same year he had a supermajority in the legislature): eh, that’s not so important
I have zero faith in Democrats in Congress to actually do this and all of the Republicans in Congress are vocally (or tacitly) opposed to it.
Clinton’s VP pick was an anti-choice Democrat.
I doubt there will be a federal law allowing for first trimester abortions on demand for at least a decade.