The notion that we can control the flow of information is obsolete.

Now is not the time to gut these job-creating investments in science and innovation. Now is the time to reach a level of research and development not seen since the height of the Space Race.

I have much more confidence in my ability, or any president or any leader's ability, to mobilize the American people around a multiyear, multibillion-dollar investment to help every child in poverty in this country than I am in being able to mobilize the country around providing a benefit specific to African Americans as a consequence of slavery and Jim Crow.

Iran was nearing completion of a new reactor capable of producing plutonium for a bomb.

Both of our nations [America and Germany] were proud to join the Paris Climate Agreement which the world should work to implement quickly. Continued global leadership on climate in addition to increasing private investment and clean energy is gonna be critical to meeting this growing threat.

I don't have a philosophical objection, necessarily, to a travel ban if that is the thing that is going to keep the American people safe.

Everybody knows politics is a contact sport.