President Trump takes his case to the public

The president will argue for a wall along the Mexican border in a speech beginning at 9 p.m. Eastern. It is expected to be about 10 minutes long and will be broadcast across the four major American TV networks.

After his speech, the networks will broadcast a response from the Democratic Party leaders Nancy Pelosi and Chuck Schumer.

We’ll have a stream of the president’s speech on nytimes.com — and a team of reporters providing live fact-checking and analysis. Here’s what to watch for and the larger issues the president faces.