UPDATE 2:48 p.m. EST:
Two of Trump's aides spoke on Sunday about the border wall, giving slightly different interpretations of how important it was to the fate of any budget bill.
White House budget director Mick Mulvaney said on "Fox News Sunday" "we don't know yet" if Trump will sign a budget without wall funding. But White House Chief of Staff Reince Priebus said on NBC's "Meet the Press" Trump would sign off "as long as the president's priorities are adequately reflected," including border security.
ORIGINAL STORY: For months during and after the campaign, President Trump insisted that Mexico would pay for his proposed border wall, even after Mexican leaders insisted they would not.
Trump tweeted Sunday that the payment may come "eventually," instead of upfront.
Eventually, but at a later date so we can get started early, Mexico will be paying, in some form, for the badly needed border wall.— Donald J. Trump (@realDonaldTrump) April 23, 2017
Here's Trump's tweet on the payment plan.
The Democrats don't want money from budget going to border wall despite the fact that it will stop drugs and very bad MS 13 gang members.— Donald J. Trump (@realDonaldTrump) April 23, 2017
Before that, he touted the wall's importance in stopping crime.
WATCH | Trump wants Congress to pass a budget that includes funding for the border wall. But Democrats have threatened to oppose any bill that includes money for a wall or deportation force, and may trigger a government shutdown.