Conservative radio show host Rush Limbaugh said Tuesday that it looks like President Trump is "caving" on his proposed wall along the Mexican border, a high-profile campaign promise, ahead of a Friday deadline to fund the government.

“I’m very, very troubled to have to pass this on. And I want to say at the outset that I hope my interpretation is wrong,” Limbaugh said on his national radio show.

“But it looks like, from here, right here, right now, it looks like President Trump is caving on his demand for a measly $1 billion in the budget for his wall.”

Limbaugh said Trump appears willing to avoid a government shutdown by delaying funding for the border wall. And if that ends up being the case, he says, Democrats would learn that threatening a shutdown is an effective strategy to use against the Trump administration.

“Democrats seem to have successfully used its stupid, silly threat of a government shutdown to get their way,” Limbaugh said.

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“And the bottom line is, is that if he is willing to draw a demand of his for a measly billion dollars for the wall because the Democrats are threatening a shutdown, then the Democrats will just have learned that his threat works on Trump too, not just all the other Republicans,” he continued.

Trump said during a meeting of conservative talk show hosts late Monday that he is open to getting money for his proposed wall in the fall, instead of in a spending bill this week.

Trump tweeted Tuesday, however, that he has not changed his position.

"It will get built," he said.

Midnight Friday is the deadline for lawmakers to pass a spending bill that would fund the federal government through September and avoid a shutdown.

Democrats like Sen. Minority Leader Charles Schumer Chuck SchumerMcConnell accuses Democrats of sowing division by 'downplaying progress' on election security Warren, Schumer introduce plan for next president to cancel ,000 in student debt Schumer lashes out at Trump over 'blue states' remark: 'What a disgrace' MORE (N.Y.) have called on the White House to drop the fight for border wall funding in that legislation.

Both Democratic and Republican lawmakers have said a government shutdown is not a desired outcome.