I just miss - I miss being anonymous.

By 2025 we expect new spacecraft designed for long journeys to allow us to begin the first ever crewed missions beyond the Moon into deep space. So we'll start by sending astronauts to an asteroid for the first time in history. By the mid-2030s I believe we can send humans to orbit Mars and return them safely to Earth. And a landing on Mars will follow and I expect to be around in see it.

When it comes to immigration, I think Americans expect that our immigration process is orderly and it is legal.

We need scientists to design new fuels. We need farmers to help grow them. We need engineers to invent new technologies. We need entrepreneurs to sell those technologies. We need workers to operate assembly lines that hum with high-tech, zero-carbon components. We need builders to hammer into place the foundations for a clean energy age. We need diplomats and businessmen and women, and Peace Corps volunteers to help developing nations skip past the dirty phase of development and transition to sustainable sources of energy. In other words, we need you.

We can't wait for Congress to do its job. So where they won't act, I will.

The politics around trade has always been tough, particularly in the Democratic party, because people have memories of outsourcing and job loss.

This week I've travelled more than 15,000 miles from America to China to Burma to Australia. I have no idea what time it is right now.