The U.S. president on Thursday sent a letter to House Speaker Nancy Pelosi calling off her travel plans just before she was set to depart on a three-nation visit.
"Due to the Shutdown, I'm sorry to inform you that your trip to Brussels, Egypt and Afghanistan has been postponed." The message from President Trump appears to be punitive, in retaliation for Pelosi's request a day earlier that Trump postpone the State of the Union address until the partial government shutdown is resolved.
The Democratic Speaker suggested the annual address be rescheduled, or delivered in writing.
Pelosi defended that request Thursday.
(SOUNDBITE) (English) U.S. HOUSE SPEAKER NANCY PELOSI, SAYING: "I'm saying let's get a date when government is open.
Let's pay the employees.
Maybe he thinks it's OK not to pay people who do work.
I don't." Trump appears to have taken it personally, and he responded in kind.
The president's letter denied Pelosi the use of military aircraft, stating, "Obviously, if you would like to make your journey by flying commercial, that would certainly be your prerogative." Nancy Pelosi's deputy chief of staff pointed out on Twitter that Trump had, in fact, flown to Iraq in the middle of the shutdown.
The Secret Service officers who would protect the State of the Union are currently working without pay.
The Defense Department that would have flown Pelosi across the world is fully funded.
(SOUNDBITE) (English) U.S. PRESIDENT DONALD TRUMP, SAYING: "A wall has to be built.
We need security at our southern border.
Earlier in the day Donald Trump showed no signs of budging from his position: that he would not reopen government until Democrats agreed to put $5.7 billion dollars toward a wall on border with Mexico.
(SOUNDBITE) (English) U.S. PRESIDENT DONALD TRUMP, SAING: "The government remains shut down because Congressional Democrats refuse to approve border security." Without meaningful negotiations to end the impasse, the sides appear moving further from efforts at persuasion and toward outright coercion.
And as the White House and lawmakers trade attacks, the hardship grows daily for the 800,000 federal employees who are furloughed or working without pay.
On Thursday the Boston Globe reported that former Trump economic adviser Gary Cohn called the shutdown "completely wrong."