Sen. Mark Warner (D-Va.) on Sunday said President TrumpDonald TrumpJulian Castro knocks Biden administration over refugee policy Overnight Energy & Environment — League of Conservation Voters — Climate summit chief says US needs to 'show progress' on environment Five takeaways from Arizona's audit results MORE's proposal to extend protections for young undocumented immigrants in exchange for wall funding is a "starting point."
Warner, appearing on NBC's "Meet the Press," added that Trump must first reopen the government and said Democrats can't reward the "behavior of hostage taking."
"Let me just also make clear that what the president proposed yesterday, increasing border security, looking at TPS, looking at, at the Dreamers, I'll use that as a starting point. But you've got to start by opening the government," Warner said.
"What we cannot do, and I've actually had Republicans as well recognize this, is that we cannot reward the kind of behavior of hostage taking. Because if the president can arbitrarily shut down the government now, he will do it time and again," he added.
WATCH: Sen. Mark WarnerMark Robert WarnerPanic begins to creep into Democratic talks on Biden agenda Democrats surprised, caught off guard by 'framework' deal Schumer announces Senate-House deal on tax 'framework' for .5T package MORE (D-Va.) calls for the government to reopen.@MarkWarner: “What the president proposed yesterday … I’ll use that as a starting point, but you’ve got to start by opening the government.” pic.twitter.com/HYal3YZdY2— Meet the Press (@MeetThePress) January 20, 2019
Trump on Saturday said he would extend protections for some groups of immigrants in exchange for $5.7 billion in funding for a wall along the southern border.
Democratic leadership has been quick to downplay the proposal, with Speaker Nancy PelosiNancy PelosiOn The Money — House pushes toward infrastructure vote US mayors, Black leaders push for passage of bipartisan infrastructure bill Lawmakers say innovation, trade rules key to small business gains MORE (D-Calif.) calling it a "non-starter."
Trump's demand for a border wall sparked the ongoing government shutdown, which began Dec. 22 and is now in its 30th day.