Chuck Todd: Donald Trump's behavior at presser 'borderline irresponsible' 3:19

Donald Trump has branded him a "hater," "very hostile" and "Mexican."

U.S. District Judge Gonzalo Curiel, who's presiding over two of the three lawsuits against Trump University in San Diego, is clearly now in the cross hairs of the bombastic presumptive Republican presidential nominee.

But Curiel is no stranger to being targeted — and in the 1990s he was even reportedly on the hit list of a Mexican drug cartel.

 
Judge Gonzalo Curiel US District Court Southern District of California