Obama was a "guest lecturer" on a fringe topic. He was never a "professor" of "constitutional law". That was an exaggeration intended to inflate his credentials. Lots of stupid people fell for it. He's a marxist ideologue and influenced by black liberation theology (as cover for being a closet muslim). Mostly, he's an empty suit that does the bidding of Valerie Jarrett. His loose cannon behavior can be bottled up in the courts until he has to leave office.
Obama “believes in the Second Amendment - it’s written on the paper.” Doesn’t that sound like a constitutional scholar?