The Biden administration is weighing whether he has the sole power to close the southern border with Mexico should the need arise, the president said Tuesday.

The bipartisan border security deal that’s headed for a pivotal first vote this week would pair $20 billion in emergency spending with policy changes that would amount to the most stringent ...

“It would give me, as President, a new emergency 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 ...