Barack Obama actually said...

On foreign policy, Donald Trump is temperamentally unfit to be commander in chief.

She knows how to do it, and that's why she needs to be the next President of the United States.

If his closest advisers don't trust him to tweet, why would any of us trust him with the nuclear codes?

The most important office in a democracy is not President, it's not Senator, it's not Congressman or mayor, it is the office of citizen.