I don’t have a very high opinion of Obama (voted against him twice), but our choices in the 2016 election made me rue the 22nd amendment. That said, it’s hard to argue against all the provisions of Obamacare, especially the extension of children’s coverage to age 26 and the requirement that insurance companies cover people with pre-existing conditions. I suspect that Trumpcare will include these, else the Republican dominion will be short-lived.
And as ubiquitin pointed out, he arranged for the liquidation of Osama Bin Laden.