Obama was
so successful that Trump ran
against Obama and won.
No he ran against Hillary Clinton and won, Pres Obama would have mopped the floor with Trump that's why he waited until Pres. Obama had to served his 2 terms. Hell Trump couldn't even win another term, he is ONE and DONE.
Hillary was part of Obama's administration, so running against Obama was a valid strategy and it worked.
That you pretend not to understand that, is because you know it is true, but don't like it.
Obama was the first black president.
That, and the damage the race baiting of his supporters did, is his entire legacy.