The president's son called out Sen. Ted Cruz (R-Texas) for making a $30 billion claim about the U.S. memorandum of understanding with Iran.

Donald Trump Jr. accused Ted Cruz of lying about a reported Iran deal, saying the U.S. is "not giving them a cent."

The president's son called out Sen. Ted Cruz (R-Texas) for making a $30 billion claim about the U.S. memorandum of understanding with Iran.