White House Press Secretary Sarah Huckabee Sanders, who has rarely held briefings in recent months, gave no explanation when she tweeted at 4:07 p.m. that one would be held at 4:10. Trump, who has made suspense and televised drama a hallmark of his presidency, walked into the room 20 minutes later with a phalanx of seven men and one woman, mostly leaders of the National Border Patrol Council, the union for about 18,000 border agents.
Source: latimes.com – Los Angeles Times