President TrumpDonald John TrumpSchiff urges GOP colleagues to share private concerns about Trump publicly US-China trade talks draw criticism for lack of women in pictures Overnight Defense: Trump to leave 200 troops in Syria | Trump, Kim plan one-on-one meeting | Pentagon asks DHS to justify moving funds for border wall MORE touted the unity of his party on Friday as the partial shutdown of the federal government reached its 28th day.

In a tweet, Trump pledged that Republicans would not "Cave" on his demand for more than $5 billion for a border wall, and faulted Democrats for supporting what he calls "Open Border, High Taxes and Crime" policies.

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"Never seen the Republican Party so unified. No 'Cave' on the issue of Border and National Security," Trump said.

"A beautiful thing to see, especially when you hear the new rhetoric spewing from the mouths of the Democrats who talk Open Border, High Taxes and Crime. Stop Criminals & Drugs now!" the president added.

Negotiations between Democrats and the White House have stalled as the shutdown appears likely to cross the one-month mark, with Democrats unwilling to budge on providing funding for the wall and the White House refusing to reopen other parts of the government until the Department of Homeland Security receives funding for the wall's construction.

Tensions have only intensified this week, with Speaker Nancy PelosiNancy Patricia D'Alesandro PelosiOn The Money: Senate Dems to introduce resolution blocking Trump emergency declaration | Banks made billion in extra profits thanks to GOP tax law | IRS analyst charged with leaking Cohen's financial records Coast Guard lieutenant accused of planning domestic terrorism denied bail Inviting Kim Jong Un to Washington MORE (D-Calif.) urging Trump to postpone his State of the Union address and the president responding by denying military transport to congressional delegation trips, a move that effectively canceled Pelosi's planned trip this week to Afghanistan.