This week with George Stephanopoulos starts right now.

Constitutional Showdown.

We're bad people. We don't want them in our country.

We can't let a judge say that he wants it.

President Trump escalates his battle with federal courts,

even calling for impeachment after one judge tries to block his latest deportation plan.

We have judges who are acting as partisan activists from the bench.

We're in a constitutional crisis.

This morning, White House Borders' Art Tom Homan joins me live, a Sunday exclusive.

Plus Chris Christie on the debate over presidential powers.

Rallying cry.

We're not going to allow Trump to destroy our great country.

As Democrats struggle to mobilize against Trump, Bernie Sanders draws massive crowds.

Out here in Denver, big crowds to see Bernie Sanders and Alexandria Ocasia Cortez.

They're calling it the fighting oligarchy tour.

My conversation with the independent senator.

How much lasting damage in your view do you think Trump is doing?

We have the political will. It can be on that.

Another Sunday exclusive.

And what exactly is Elon Musk doing at the Pentagon?

The roundtable on the week's most surprising developments. From ABC News, it's this week. Here now,

Jonathan Carl. Good morning. Welcome to this week. We were just with Bernie Sanders in Denver, where we saw one of the biggest and most energized crowd of Democrats that we have seen in a long time.

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