On Thursday, President Donald Trump abruptly canceled Rep. Nancy Pelosi‘s (D-Calif.) planned trip to Afghanistan after the House Speaker requested in a letter that he postpone his State of the Union address due to the ongoing government shutdown.

The development marks a new low point for the partial shutdown, which entered its 28th day on Friday. In a move to assert her power as the leader of the Democrat-controlled House, Pelosi asked Trump earlier this week to reschedule his annual State of the Union speech, which is set for Jan. 29, or deliver it in writing. According to CNN, the House Speaker — who was also planning to travel to Brussels and Egypt — claimed her trip to Afghanistan to visit U.S. troops was cancelled due to security concerns. Specifically, the State Department told Pelosi it was not safe to fly to the country commercially. Pelosi was slated to return on Tuesday.

“Due to the Shutdown, I am sorry to inform you that your trip to Brussels, Egypt, and Afghanistan has been postponed,” Trump wrote to Pelosi in his letter. “We will reschedule this seven-day excursion when the Shutdown is over. In light of the 800,000 great American workers not receiving pay, I am sure you would agree that postponing this public relations event is totally appropriate.”

Many Republican lawmakers, including Sen. John Cornyn (R-Tex.) and Sen. Lindsey Graham (R-S.C.) voiced similar sentiments about Pelosi politicizing her request about Trump’s SOTU address.

SLIDESHOW: DONALD TRUMP’S 30 CRAZIEST TWEETS

Despite Pelosi’s international trip being nixed, First Lady Melania Trump was given permission to fly to Palm Beach, Florida.

The shutdown, which is now the longest in American history, has led to nine of 15 federal departments being closed. The probability of Trump and Congress reaching a deal to end the shutdown and agree on border security — including funds for the border wall — appears lower each day.

“The president wants her here to negotiate,” White House Press Secretary Sarah Huckabee Sanders told reporters about Pelosi.

In a tweet on Thursday, Pelosi’s Deputy Chief of Staff Drew Hammill revealed her stop in Brussels was “required for pilot rest” and added that she and other officials were set to meet there with NATO commanders “to affirm the United States’ ironclad commitment to the NATO alliance.”