The President Plans Big Announcement on Saturday on Shutdown, Border

WASHINGTON — President Donald Trump says he’ll make a “major announcement” on the government shutdown and the southern border on Saturday afternoon as the standstill over his border wall continues.

The White House did not immediately provide details on Friday about what the president would be announcing, but a person familiar with the planning said Trump planned to outline a new deal with specific proposals that the administration believes could potentially pave the way to the shutdown’s end. The person was not authorized to discuss the announcement and spoke on condition of anonymity.

The move — on Day 28 of a shutdown that has left hundreds of thousands of federal workers without paychecks — represents the first major overture by the president since Jan. 8, when he delivered an Oval Office address making the public case for his border wall. The president and his aides have said he will not budge on his demand for $5.7 billion for his border wall. Democrats have panned the offer and said they will not negotiate until the government reopens.

White House spokeswoman Sarah Huckabee Sanders declined to discuss what Trump might propose but said he was “going to continue looking for the solution” to end what the administration had repeatedly referred to as a “humanitarian and national security crisis at the border.” While few would argue that a humanitarian crisis is unfolding as the demand for entry by migrants and the Trump administration’s hardline response overwhelm border resources, critics say Trump has badly exaggerated the security risks.

The Friday evening announcement came after House Speaker Nancy Pelosi on Friday canceled her plans to travel by commercial plane to visit U.S. troops in Afghanistan, saying Trump had caused a security risk by talking about the trip. The White House said there was no such leak.

But it was the latest turn — and potentially the most dangerous — in the high-stakes brinkmanship between Trump and Pelosi, playing out against the stalled negotiations over how to end the partial government shutdown.

And it showed once again the willingness of the former hard-charging businessman to hit hard when challenged, as he was earlier this week when Pelosi suggested postponing his State of the Union address during the shutdown.

Julian Zelizer, a professor of history and public affairs at Princeton University, said it “gives new meaning” to tensions between the executive and legislative branches.

“There are public back and forths,” he said, citing relations between past presidents and House speakers. “But this kind of tensions, preventing the speaker from visiting the troops and the speaker suggesting the White House leaked information about a crucial flight, this is one more example of where Trumpism brings us into new territory.”

The political stakes are high as the shutdown moves into a fifth week, with hundreds of thousands of federal workers going without pay and no outward signs of resolution.

Sanders on Friday stressed the importance of a looming Tuesday deadline to process paychecks, when the government will need to decide if workers get another round of zeros on Friday’s payday.

“One of the key reasons that the president did not want Speaker Pelosi to leave the country is because, if she did, it would all but guarantee the fact that the negotiations couldn’t take place over the weekend,” Sanders told reporters.

It was an unusually combative week between the executive and legislative branches.

Tensions flared when Pelosi suggested Trump postpone the annual State of the Union address, a grand Washington tradition — and a platform for his border wall fight with Democrats — that was tentatively scheduled for Jan. 29.

Trump never responded directly. Instead, he abruptly canceled Pelosi’s military flight on Thursday, hours before she and a congressional delegation were to depart for Afghanistan on the previously undisclosed visit to U.S. troops.

Trump belittled the trip as a “public relations event” — even though he had just made a similar stop in a conflict zone during the shutdown — and said it would be best if Pelosi remained in Washington to negotiate to reopen the government.

“Obviously, if you would like to make your journey by flying commercial, that would certainly be your prerogative,” wrote Trump.

Pelosi, undeterred, quietly began making her own preparations for the overseas trip.

But on Friday, Pelosi said her plan to travel by commercial plane had been “leaked” by the White House.

“The administration leaked that we were traveling commercially,” Pelosi told reporters at the Capitol. She said it was “very irresponsible on the part of the president.”

She said the State Department told her “the president outing” the original trip made the scene on the ground in Afghanistan “more dangerous because it’s a signal to the bad actors that we’re coming.”

The White House said it had leaked nothing that would cause a security risk.

Denying military aircraft to a senior lawmaker — let alone the speaker, who is second in line to the presidency after the vice president, traveling to a combat region — is very rare.

Trump’s trip to Iraq after Christmas was not disclosed in advance for security reasons.

Democratic Rep. Adam Schiff of California slammed Trump for revealing the closely held travel plans.

“I think the president’s decision to disclose a trip the speaker’s making to a war zone was completely and utterly irresponsible in every way,” Schiff said.

Some Republicans expressed frustration. Sen. Lindsey Graham tweeted, “One sophomoric response does not deserve another.” He called Pelosi’s State of the Union move “very irresponsible and blatantly political” but said Trump’s reaction was “also inappropriate.”

The White House also canceled plans for a presidential delegation to travel to an economic forum in Switzerland next week, citing the shutdown. And it said future congressional trips would be postponed until the shutdown is resolved, though it was not immediately clear if any such travel — which often is not disclosed in advance — was coming up.

The new White House travel ban does not extend to the first family.

Next week, House Democrats will pass bills to try to fund the government, including one adding $1 billion to border security — to hire 75 immigration judges and improve infrastructure. The Senate, controlled by Republicans, has declined to consider any bills unless Trump is prepared to sign them into law.

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Associated Press writers Deb Riechmann, Kevin Freking, Jon Lemire, Matthew Daly, Andy Taylor, Mary Clare Jalonick, Matt Lee and Lolita C. Baldor contributed to this report.