Sen. Kamala Harris Kamala HarrisHarris honors Ginsburg, visits Supreme Court The Hill's Campaign Report: Trump and Biden vie for Minnesota | Early voting begins in four states | Blue state GOP governors back Susan Collins Kamala Harris: Black Americans have been 'disproportionately harmed' by Trump MORE (D-Calif.) on Thursday called on Congress to pass a "clean" bill on Deferred Action for Childhood Arrivals (DACA) as Democrats slam the Trump administration's recently announced immigration principals.

“This is about a fight for the future of this country, believing in the values upon which this country was founded,” Harris said at the University of California-Irvine, according to The Orange County Register. “The path right now is rocky. It is difficult. It is hard."

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“We are witnessing things that we can only describe as awful and wrong, and mean-spirited. But that’s OK … Because we know this is about doing the right thing. We know this is about all the young people, who were brought here, some before they could walk or talk," she said.

Harris's comments come after the Trump administration announced a list of hard-line security measures aimed at closing off the nation’s borders and cracking down on undocumented immigrants.

The list of principals included construction for President Trump's proposed border wall and whether Republicans and Democrats can bridge their differences and reach a compromise on protecting so-called Dreamers.

Trump announced last month he would move to end DACA with a six-month delay to allow Congress a window to broker a legislative solution.

Senate Minority Leader Charles Schumer Chuck SchumerVideo of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral Graham signals support for confirming a Supreme Court nominee this year Pelosi orders Capitol flags at half-staff to honor Ginsburg MORE (D-N.Y.) and House Minority Leader Nancy Pelosi (D-Calif.) met with Trump last month at the White House, where the three forged a tentative deal to couple legal protections for young, undocumented immigrants with tougher security measures — excluding Trump’s promised border wall.

But Democrats blasted the administration's immigration principles released this week, with Pelosi calling them garbage.

“They are not principles, they are trash,” she said.

“Each one of them is horrible, but the cumulative effect of them would destroy a fundamental part of the American character: a free nation proud of an immigrant heritage," Pelosi added.