Former acting Director of U.S. Immigration and Customs Enforcement [ICE] Thomas Homan warned Democrats seeking the White House in 2020 against "enticing" illegal immigrants with lax immigration policies, in an interview that aired Sunday, saying America could face an "out-of-control border" if a Democrat unseats President Trump.

"They say they care about these people, they care about children dying and women being raped... they need to look in the mirror because if you keep offering enticements... 'sanctuary cities'... free health care... in-state tuition... people are going to put themselves in harm's way to come to this country," Homan told Steve Hilton on "The Next Revolution."

"This president has gotten the border down 65 percent... on his own, and at the same time, you've got the Democratic Party throwing out more enticements," he continued.

TOM HOMAN: 2020 DEMS MAKING PROMISES TO ILLEGALS WILL 'GUARANTEE' TRUMP WIN

"Do they think that's gonna help the border?" he added. "When you say, 'I want to abolish ICE, we want to end immigration detention, we want to give you free health care...' when you throw these enticements out, more people are going to come to this country illegally," Homan reiterated.

Illegal border crossings have dropped roughly 65 percent in recent months from a May 2019 peak.

Speaking at a recent rally in California, Sen. Bernie Sanders, I-Vt, extended his "Medicare-for-all plan" to include illegal immigrants.

"Public colleges and universities tuition-free -- that includes, as I said earlier, undocumented young people," he added.

During a recent primary debate, South Bend, Indiana, Mayor Pete Buttigieg said that he would commit to financial compensation for thousands of migrant children separated from their families at the southern border and that they should have a "fast track" to citizenship.

"If they make success out of these promises they make, why wouldn't you come here?" Homan asked.

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"I'll tell you what, if they win the election in 2020, this country's in trouble," he continued. "You're gonna see an out-of-control border like you've never seen it before."

He added, "This is going to cause this country to collapse."

Fox News' Julia Musto contributed to this report.