I believe the Visa Waiver Program, it essentially is the soft underbelly of the visa system. Now we have 35 countries in it. We have 16 million people coming in. I believe the overstays still run about 40 percent of the undocumented population. In other words, there's 40 percent that you really don't know where it came from is what I'm trying to say. And I've always suspected people come in on a visitor's visa and they just decide to stay, and that's a large part of the undocumented population.

If the president Donald Trump thinks he can fire Deputy Attorney General Ron Rosenstein and replace him with someone who will shut down the investigation, he's in for a rude awakening.

We have a chance to wind down and expedite the removal of 96 percent of the world's nuclear weapons. What an achievement it would be, if at the end of the next administration, we could say that the nuclear arsenals of both Russia and the United States had been reduced to the barest minimums.

I think the greatest threat to the privacy of Americans is the drone, and the use of the drone and the very few regulations that are on it today.

It is abundantly clear that a total review of all intelligence programs is necessary so that members of the Senate Intelligence Committee are fully informed as to what is actually being carried out by the intelligence community.

While the distance between the United States and Iraq is great, Saddam Hussein's ability to use his chemical and biological weapons against us is not constrained by geography - it can be accomplished in a number of different ways - which is what makes this threat so real and persuasive.

I'm concerned about the role the court will play in protecting individual rights in this and the next century.