Office of Management and Budget Director Mick Mulvaney said Tuesday that President Trump would sign a spending bill that does not include funds to build a border wall.

“Yeah, because the bill, at least the offer that we received from the Democrats the last couple days, included a good bit of money for border security," Mulvaney told host Jake Tapper on CNN's "The Lead.”

Mulvaney said the spending bill, which would fund the federal government through September and avoid a shutdown at the end of the week, includes money for border security. Those funds, however, are not specifically allocated for building a border wall.

He said the bill would allow Trump "to follow through on his promise to make that border more secure.”

The agreement comes as the midnight Friday government-funding deadline approaches, and a possible government shutdown looms.

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Mulvaney said the administration doesn’t plan “to back down” from its promise to build a border wall.

"We just thought that it would be a good first step to get these things that everybody agrees on and take that idea of a government shutdown off the table," Mulvaney continued.

Mulvaney said officials plan to begin budget discussions for fiscal 2018, which starts October 1, "as soon as this bill is signed."

Mulvaney said, however, that he has yet to hear from the Democrats.

"We've not heard anything from them today," Mulvaney said. "We thought we had a deal as of yesterday.”

Building a border wall is a key campaign promise for Trump, who insisted a wall along the U.S.-Mexican border will be built in the first 100 days of his presidency — and Mexico would pick up the tab.

Last month, the White House asked Congress to pay for a “down payment” on the wall, saying Mexico will pay the U.S. back at some point in time.