Americans don't want to hear the answers are privileged and off limits or they can't be provided in public or it would be inappropriate for witnesses to tell us what they know. We are talking about an attack on our democratic institutions and stonewalling of any kind is unacceptable. General Jeff Sessions acknowledged that there is no legal basis for this stonewalling.

In today's world, it is shortsighted to think that infectious diseases cannot cross borders. By allowing developing countries access to generic drugs, we not only help improve health in those nations, we also help ourselves control these debilitating and often deadly diseases.

Men and women who have served in harm's way experience higher rates of divorce and suicide. Many battle the debilitating effects and stigma associated with Post Traumatic Stress Disorder.

The Internet has changed the way we communicate with each other, the way we learn about the world and the way we conduct business.

Right now, there are a limited number of customers for Canadian oil. Due to simple geography - and without the pipeline - it's really only cost effective for Canadian oil producers to sell their oil to North American customers, mostly American Midwesterners.

The Internet has become an integral part of everyday life precisely because it has been an open-to-all land of opportunity where entrepreneurs, thinkers and innovators are free to try, fail and then try again.

Part of what we're trying to do is lay out what really happened. For example, I've been trying to get across that the intelligence leadership did not just keep the country in the dark. They actively misled the country on key issues. When you have someone who heads the NSA saying we don't hold data at all on US citizens, that's one of the most misleading statements I believe that's ever been made about surveillance policy. And I think that now we're starting to get that message across.