WASHINGTON (TNS) — President Donald Trump tweeted he will make a "major announcement" on Saturday about border security and what will be by then the 29-day partial government shutdown.

Three minutes after the White House call a "lid" Friday night and reporters headed for the gate, the president fired off a post saying the remarks would focus on "the Humanitarian Crisis on our Southern Border, and the Shutdown, tomorrow afternoon at 3 P.M., live from the @WhiteHouse."

The president nixed Speaker Nancy Pelosi's — and other Democrats' — planned Afghanistan trip to meet with U.S. troops and NATO officials, claiming he wanted her to stay in Washington for talks to end the shutdown.

But he did not formally invite her to the White House for any Friday or weekend talks. Presidential aide Kellyanne Conway said the speaker has an "open" invitation.

Trump's promised announcement comes after a few days of a tit-for-tat with Pelosi, including her requesting he delay his State of the Union address and him mixing the trip. Her office accused him of leaking that her office was trying to fly commercial to salvage the trip. Trump's top spokeswoman, Sarah Huckabee Sanders, on Friday said she "absolutely" thinks Pelosi's office was lying when it issued a statement accusing the White House of leaking the commercial travel plans to the war-torn country.