Chuck Hagel: “Congress' voice on this would be very important because this is a huge threat to our people.”

Our nuclear deterrent plays a critical role in assuring U.S. national security.

The facts speak for themselves, and especially when you look at the many of the witnesses, who are Trump cabinet members, White House officials in the Trump administration, supporters of Mr. Trump.

Because I had the responsibility and I play my own game here. And that is because by law, I am the one official in government charged with certification with release of detainees. I take that responsibility very seriously.

Climate change is a national security threat.