US President Donald Trump is set to argue that an immigration “crisis” requires his long-promised wall along the Mexican border.
Mr Trump will make his case in his first speech from the Oval Office at 21:00EST (0200 GMT Wednesday), ahead of a trip to the border on Thursday.
A partial government shutdown has been in effect for 17 days after lawmakers failed to break a budget impasse.
The president is insisting that $5bn (£4bn) be included for the border wall.
White House press secretary Sarah Huckabee Sanders said in a tweet that Mr Trump would use his visit to the border on Thursday to “meet with those on the front lines of the national security and humanitarian crisis”.
Ahead of the speech on Tuesday, Vice-President Mike Pence said Mr Trump’s decision to address the nation “comes from this president’s deep desire to do his job to protect the American people”