Inequality also distorts our democracy. It gives an outsized voice to the few who can afford high-priced lobbyists and unlimited campaign contributions, and runs the risk of selling out our democracy to the highest bidder. And it leaves everyone else rightly suspicious that the system in Washington is rigged against them - that our elected representatives aren't looking out for the interests of most Americans.

There are legitimate concerns and anxieties that the forces of globalisation are leaving too many people behind - and we have to take those concerns seriously and address them. But the answer isn't to turn inward and embrace protectionism. We can't just walk away from trade.

As long as I'm president of the United States Iran will not get a nuclear weapon. I made that clear when I came into office.

We can give our intelligence and law enforcement community the powers they need to track down and take out terrorists without undermining our commitment to the rule of law, or our basic rights and liberties.

I went through six years of battles on health care because I didn't have $100 million worth of advertising saying how it would never work.

I support ensuring that committed gay couples have the same rights and responsibilities afforded to any married couple in this country. I believe strongly in stopping laws designed to take rights away and passing laws that extend equal rights to gay couples. I've required all agencies in the federal government to extend as many federal benefits as possible to LGBT families as the current law allows. And I've called on Congress to repeal the so-called Defense of Marriage Act and to pass the Domestic Partners Benefits and Obligations Act.

It's the job, I think, of leaders to try to address peoples' real legitimate concerns and channel them in the most constructive ways possible.