More than any other nation on Earth, America has constantly drawn strength and spirit from wave after wave of immigrants. In each generation, they have proved to be the most restless, the most adventurous, the most innovative, the most industrious of people. Bearing different memories, honoring different heritages, they have strengthened our economy, enriched our culture, renewed our promise of freedom and opportunity for all.

Let me be clear: we are still a nation of immigrants, and we honor all those immigrants who are working hard to become new citizens.

Sure enough at Oxford, I was another Yank half a step behind.

Sincerity? I can fake that.

I regret to say that my hand did, in fact, have an improper relationship with Chelsea Clinton. The incident represents a profound lapse of judgment for which my hand takes sole responsibility.

The new energy future is decentralised, entrepreneurial and needs people like you to say 'Give me a clean car, give me solar shingles to put on my roof - give me a clean future'

I think you have you to give people the facts [about global warming], and then you have to tell them, this is not like drinking Castor Oil. There is a, an economically exciting way for us to create a whole new generation of American jobs without costing them an enormous amount of money or forcing them to change their lifestyle.