Obama has a huge ego. He is not only right. He is 'on the right side of history'. Anybody who doesn't agree with him is racist, bigot,misogynist, Islampgobic. Give me a break. Stop lecturing others as if they are all kindergarten kids.
No. he didn't regret. Everything is on track, Trump managed a ten-billion dollar, multinational corporation for 40 years before becoming President. What experience Obama had when he became President? Nothing.