There are still enough around who don't believe that makes him a NBC and won't vote for him for that reason alone.
And, the demonrats will argue that even obama supposedly was born in America, unlike Ted Cruz, and use his foreign birth against him and his supporters.
I expect that to all be ignored by his faithful Cruz for Prez hopefuls, but don't say I and others didn't warn you, way ahead of time.
Cruz is American, and fully qualified to be president.