President Trump on Wednesday ignored Speaker Nancy Pelosi's threat to postpone his scheduled State of the Union address next week and said he's showing up anyway.

Pelosi, D-Calif, told Trump last week that security for Trump and lawmakers is questionable because of the ongoing government shutdown. But Trump dismissed that concern in a letter to the speaker Wednesday and said he'd be arriving to deliver his speech in the House chamber as scheduled on Tuesday, Jan. 29.

“[T]here are no security concerns regarding the State of the Union address,” Trump told Pelosi in a letter. “Therefore, I will be honoring your invitation and fulfilling my constitutional duty, to deliver important information to the people and Congress of the United States of America regarding the State of Our Union.”

"I look forward to seeing you on the evening of January 29th in the Chamber of the House of Representatives," he added. "It would be so very sad for our country if the State of the Union were not delivered on time, on schedule, and very importantly, on location!”

Trump said that after receiving her letter last week, the Department of Homeland Security and Secret Service contacted him to “explain that there would be absolutely no problem regarding security with respects to the event.”

Pelosi formally invited Trump this month to deliver the State of the Union on Jan. 29. In order for the president to do so, however, a concurrent resolution setting the day and time of the address must be passed by both chambers. Pelosi has yet to bring the resolution to the House floor.

The speaker's request for Trump to reschedule the State of the Union wasn't a formal decision to disinvite him. But Democrats have since said it's effectively a move to postpone the State of the Union.

Trump responded to Pelosi's letter last week by preventing Pelosi and other Democrats from using military aircraft to travel overseas. The White House budget office then barred the use of government aircraft for congressional delegations without approval from the White House chief of staff.

The president’s letter to Pelosi comes as the partial government shutdown entered its 33rd day, and federal workers are poised to miss a second paycheck Friday.

Trump and congressional Democrats have been at a stalemate over a deal to reopen the federal government, with the president demanding $5.7 billion for a barrier along the southern border and Democrats refusing the request and declining to negotiate.

On Saturday, Trump offered Democrats a deal to extend protections for three years to immigrants brought to the U.S. illegally as children and extend relief to immigrants living in the U.S. under Temporary Protected Status for three years.

Democrats, however, rejected the proposal.

Kellyanne Conway, counselor to the president, told reporters at the White House that the administration has heard "crickets" in response to Trump's proposal.

She went on to accuse Pelosi of lying about security concerns to justify the speech being postponed and said Trump decided to send his letter Wednesday to ensure there is "certainty" about the upcoming address. First lady Melania Trump, Conway said, is inviting guests to attend the State of the Union.

"What's everyone so afraid of the president saying at the State of the Union that you would deny the country the ability to hear its president?" she said. "I think Nancy Pelosi is worried that some in her chamber won't show up. That's not embarrassing to the president. That's embarrassing to her."