Mike McCaul: “These policies of the Obama administration put Americans at risk, because we don't know who is coming into that country…”

We can’t let Putin prevail now.

We’ve never seen anything like this in recent times. And so, what I’m concerned about is that the escalation here and the temperature rising, we got to be very careful not to be on the precipice of a World War III.

Without that, I would not advise Ukraine to sign this. They can't sign an agreement like Budapest and then allow Russia to invade again.

With all deference to the president, I don’t think that was a mistake. I think Putin is testing the resolve of NATO.