The real professors don’t have to do a thing. There is no reason to force the issue - the statement is just a bunch of words. The real professors have the power over promotion and tenure. The adjuncts have nothing other than the ability to say “I’m a professor.”
I might have added, Obama was a professor in the same way an illiterate professional athlete is a high school graduate. The illiterate athlete may say a hundred times he’s a high school graduate but it’s a joke.
So Obama claims to have been a professor and a law review editor. It’s a joke.