In the American constitutional system of three different branches, conflict - and I mean that peaceful, vigorous debate - it's a feature of our system, not a bug. We need less all-or - winner-take-all politics.

I think I'm one of five people in the Senate who's never been a politician before. And now that I am a politician, what I find weird about it is that I respect myself less.

People think if they voted for somebody, they should reflexively defend everything they do or say. And if you voted against somebody, you should just as reflexively oppose everything they do or say. It's not very helpful. What's more constructive for our kids is to go on a case-by-case basis, evaluating particular policies.

Let's be clear: Has the U.S. ever made any mistakes? Of course.Is the U.S. at all like [Vladimir] Putin's regime? Not at all.

The real number of the US' obligations, unfunded obligations that we're passing on to our future generates is more like $70 trillion to $75 trillion. The vast majority of that is health entitlements - Medicare, Obamacare, Medicaid. There's also Social Security, interest on the debt. But fundamentally, health entitlements are the thing that will bankrupt our kids. We need to fix that for the long-term.

I don't understand what the president's [Donald Trump] position is on Russia. But I can tell you what my position is on Russia: Russia is a great danger to a lot of its neighbors, and [Vladimir] Putin has as one of his core objectives fracturing NATO, which is one of the greatest military alliances in the history of the world.

We're not at war with all Muslims, we're at war with a subset of Islam that believes in killing in the name of religion, as jihadis do.