House Speaker Nancy Pelosi on Wednesday urged President Trump to delay his State of the Union address, which is set for Jan. 29, until after the government shutdown ends.

In a letter to the president, Pelosi (D-Calif.) cited “security concerns” related to the shutdown’s effect on the US Secret Service, which provides security for the president’s annual address to a joint session of Congress.

“Sadly, given the security concerns and unless government re-opens this week, I suggest that we work together to determine another suitable date after government has re-opened for this address or for you to consider delivering your State of the Union address in writing to the Congress on January 29th,” Pelosi wrote.

The partial government shutdown began on Dec. 22 after Trump rejected a Senate bill that would have kept it open through Feb. 8.

The president opposed the bill because it did not include $5.7 billion for his long-promised wall along the Mexican border.

About 800,000 federal workers are furloughed or working without pay as a result of the shutdown, which is the longest in US history.

“The U.S. Secret Service was designated as the lead federal agency responsible for coordinating, planning, exercising, and implementing security for National Special Security Events by Public Law 106-544, December 19, 2000,” Pelosi wrote.

“However, both the U.S. Secret Service and the Department of Homeland Security have not been funded for 26 days now — with critical departments hamstrung by furloughs.”