The number of unaccompanied children arriving at the U.S.-Mexico border is growing — and, with it, anxiety in the Biden administration.

Newer concerns have mixed with longstanding ones to create a situation at the border that could become untenable.

Today, in the second part of our series on what we’re learning about the Biden administration, we look at the president’s response to the growing number of minors at the border.

Guest: Zolan Kanno-Youngs, a homeland security correspondent based in Washington for The New York Times.

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Background reading:

• In recent months, hundreds of migrant families have been released into the United States by Border Patrol agents. Thousands more are hoping for a chance to enter under looser policies • . • President Biden is trying to untangle an interlocking web of Trump-era border restrictions, leading for now to disparate treatment of migrants and rampant confusion • . • The Biden administration has said it will shorten the detention of migrant families • . Researchers say children can show symptoms of trauma after spending long periods in custody.

For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.

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