Barack Obama: “We think it's for the people of Libya to decide who the head of their country is, not for the United States to do that.”

Because if this becomes the new normal, there’s no reason to believe it will stop with her — or that future presidents, in either party, won’t do the same.

I think when we act on that basis, it doesn't always work out, but over time things do get better.

People need to “rediscover what’s the story we tell about how we’re going to live together, and see each other, and recognise each other, and disagree, and yet, still care for each other”.

The effort, he said, “should outrage all Americans, regardless of how they feel about Congresswoman Omar’s political views.”