Biden, in a statement released Friday night, said what's being negotiated in the Senate would be "the toughest and fairest set of reforms to secure the border we’ve ever had in our country."
He said the proposal would include new presidential authority to "shut down the border when it becomes overwhelmed."
"And if given that authority, I would use it the day I sign the bill into law," Biden said.
Biden's statement sought to save a bipartisan border deal on the verge of collapse after Senate Minority Leader Mitch McConnell, R-Ky., acknowledged privately to other Republican senators this week that opposition from former President Donald Trump − the 2024 Republican presidential frontrunner − puts the party in a dilemma.