"Biden Vows Border Shutdown in Bipartisan Bill"

President Biden pledges to use new emergency authority to "shut down" the border when overwhelmed if Congress passes bipartisan immigration legislation, which he describes as the toughest and fairest reforms for border security. This comes as U.S. Customs and Border Protection reports a record number of encounters with undocumented migrants in December, prompting Biden to emphasize the need to fix the "broken" border. The Senate is in talks to strike a deal on border funding and aid for Ukraine, while former President Trump seeks to derail the bipartisan border agreement.