Except that he turned against the Republican party during the Reagan/Gingrich revolutions of the 1980s and 90s.
Mitt left the GOP, he went from supporting liberal republicans, to supporting only democrats, he fund even raised democrat.
Romney reregistered Republican in October 1993 to run for office, he kept fighting conservatism and supporting the hard left for years.
Romney does have an inner agenda, he wants to avenge his family, by destroying the conservative republicans.
Ok.
That makes him traitorous.
Carry on.