The statement that Republicans treat white male politicians better is pretty iffy though. Bernie got some nasty attacks when they thought he could have gotten the nomination, and Trump never really stopped attacking Jews.
A lot of racists wouldn't consider Bernie to be "white" though on account of his Jewish ancestry.
At any rate, I don't remember the GOP ever claiming that Gore or Kerry were hidden Musselmen that were born of a land outside our realm. Birtherism as well as the Secret Adhan Man nonsense clearly come from him being black.