I never respond to Donald Trump's personal insults about me. I could care less what he says about me. I'm going to respond when he calls a judge unqualified because of his Mexican heritage, or mocks a reporter with a disability, or says demeaning things about women. And the list goes on.

In most of the USA, the three largest health insurance companies in each state control 80 percent of the market. No wonder premiums are going up.

When we talk about Donald Trump business, he has taken business bankruptcy six times. There are a lot of great businesspeople that have never taken bankruptcy once.

I've said that we're going to produce real results for the American people because so many Americans feel left out and left behind, they think the economy has failed them, they think our government has failed, they can't stand the gridlock and dysfunction in our politics, and I'm determined to produce more good jobs with rising incomes, and deal with all of the concerns that families have about education, college affordability, student debt.

I believe that when we have millions of hard-working immigrants contributing to our economy, it would be self-defeating and inhumane to try to kick them out. Comprehensive immigration reform will grow our economy and keep families together, and it's the right thing to do.

I want to imagine a country where people's wages reflect their hard work, where we have healthcare for everyone, and where every child gets to live up to his or her potential.

I'm in charge of the State Department's 60,000-plus people all over the world, 275 posts.