Vice President Kamala Harris plans to announce Friday that not only would she keep in place President Joe Biden’s sweeping asylum crackdown if she wins the White House, but that she would take it even further.

During her border visit in Douglas, Arizona, the vice president will propose toughening the president’s policy that suspends asylum claims in between ports of entry when border crossings reach a certain threshold, per a senior campaign official, who was granted anonymity to not get ahead of the vice president’s speech. The senior campaign official did not provide further details of Harris’ proposal.

It’s a striking and aggressive move from Harris in the final stretch of the campaign, as she doubles down on her efforts to cut into former President Donald Trump’s advantage with voters on immigration. The new proposal comes as the vice president makes her first trip to the southern border as the Democratic nominee, when she also plans to emphasize her opponent’s role in killing the bipartisan border deal.