The government shutdown, which was scheduled to begin at 12:01 a.m. Saturday, stems from a showdown over funding for a wall on the southern border, which Mr. Trump promised his supporters he would deliver once he was in the Oval Office.
Mr. Trump has demanded that about $5 billion for the wall be included in a spending bill necessary to keep the government running.
The Senate passed a stopgap spending bill this week that did not include money to build the wall. The House then merged the Senate’s stopgap spending bill with about $5.7 billion in funding for the wall and close to $8 billion in disaster relief funding, but that plan hit a roadblock in the Senate, where Democrats and a few key Republicans were opposed.
The House and the Senate adjourned Friday without resolving the impasse, sending the government barreling toward a partial shutdown. Both chambers were scheduled to reconvene Saturday at noon.
But Mr. Trump did not wait to send a message and, Friday night, released the video on Twitter, a communication style he has taken to in recent days. He stressed the need for border security, which he described as “a wall or a slat fence or whatever you want to call it.”