George P. endorsed Trump and Trump endorsed George P.
That doesn't mean that Jorge P. is worth a damn. His agenda is the same a Jeb's.
Trump is de facto head of the Republican party. He's expected to endorse incumbents or expected nominees. As for Jorge, he knew that if he went the route his father, grandfather, and uncle did and refused to endorse the GOP Presidential nominee in a general election, his political career would be over. He didn't endorse Trump in the general election because he agreed with Trump's agenda, he did it for completely opportunistic reasons.