Many of Bush's defenders have praised him for keeping the country safe since Sept. 11, 2001. He deserves that praise, and I'm perfectly happy to defend most of his surveillance, interrogation and counterterrorism policies against his critics.

All defense secretaries in wartime have, needless to say, made misjudgments.

Frankly, if you're 26 years old and there's a war on women or there's not a war on women, you can get all wrapped up in it and get lots of traffic on your website and get into exchanges and scream and yell about it on MSNBC or Fox, and a week later no one can remember what that was about.

The repealing and replacing of Obamacare is very complicated. It is what a White House and congressional leadership, serious White House and serious congressional leadership, should meet on and work on and figure out a strategy of, and it may work and it may not. Obviously not every administration gets things through, even when they have much larger majorities in congress and a much larger popular vote than Donald Trump had.

My sense from talking to college students is that you have a healthier sense of the diversity of opinions or arguments or analysis about issues. In our day it was just sort of, "Well gee, this is what the news says so that's the way it is." It didn't really get challenged that much.

I still would say generally that more people have access [to] and take advantage of more diversity of opinion than was once .

Conservatism as an "ism" is always going to be somewhat in tension with a political party.