President Donald Trump on Thursday will travel to the U.S.-Mexico border to meet with "those on the front lines of the national security and humanitarian crisis," White House Press Secretary Sarah Sanders announced in a tweet Monday.

Related: Shutdown day 16: No deal in shutdown talks as Trump stands by border demands

The trip comes amid a partial government shutdown over the president's demand for funding to pay for a wall along the southern border.

Right now, the president is showing no signs of budging on his request for more than $5 billion in funding, although he is now offering to build the structure with steel instead of concrete.

This is a developing story. Check back for updates.

The Associated Press contributed to this report.

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