American politics used to be an amateur sport. But somewhere along the way we handed over to professionals all the things people used to do for free.

The tax issue is the most powerful issue in American politics going back to the Tea Party. People say 'Oh Grover Norquist has power.' No. Grover Norquist and Americans for Tax Reform focus on the tax issue. The tax issue is a powerful issue.

Politics is pop. Our job as comedians - especially me as a late-night talk show which is a broader audience - is to amplify what we think America is thinking.

America wants solutions. America wants a leader. No more tabloid politics.

Anyone who seeks to be involved in politics should join hands with America.

Regardless of Bill Clinton's politics or personal life he grew up in obscurity and was elected to the presidency - twice. Don't take that away from him because then you take it away from every other kid in America sitting out there in a school bus with a big dream.

We need to dig deep and give people a reason to be optimistic just as Obama is doing in America. Because in the same way that outcome of the U.S. elections will change the course of events there and around the world so too do politics here in Britain.

If you really want to diminish a candidate depict him as the foil of his handler. This is as old in American politics as politics itself.

There are three critical ingredients to democratic renewal and progressive change in America: good public policy grassroots organizing and electoral politics.

The ability of the 1 percent to buy politicians and regulators is nothing new in American politics - just as inequality has been a permanent part of our economic system. This is true of virtually all political and economic systems.