With President Donald Trump blasting reports that he is under investigation for possible obstruction of justice, Trump ally and former House Speaker Newt Gingrich said any charge wouldn’t stick for one simple reason.

“Technically, the president of the United States cannot obstruct justice,” Gingrich said Friday during an event at the National Press Club. “The president of the United States is the chief executive officer of the United States. If he wants to fire the FBI director, all he has to do is fire him.”