Barack Obama: “It is my hope that my trip to Poland will help to strengthen the enduring bonds between the American and Polish people.”

It is a basic principle of American democracy that the government can’t selectively target individuals simply because of their political beliefs or what they say.

If I had a blame pie for why politics is so polarised and why we're seeing a rise of populism in many places, it's because of that information that is going into our brains every day.

The fact that any president, or any administration, is willing to engage in such transparent efforts to intimidate someone should outrage all Americans, regardless of how they feel about Congresswoman Omar’s political views.

And I will fight for that, even if I don’t always think it’s going to win.