As Biden stated, crossings often rise during the early months of the year as the weather improves. But the number of unaccompanied children arriving are considerably higher than in the recent years.

President Biden gave his first formal press conference, defending his response to the influx of migrants at the border and COVID-19 among a range of other pressing issues.

Vice President Harris will take on her first foreign policy portfolio: working with Mexico, Guatemala, El Salvador and Honduras to address the root causes of migration to the U.S.-Mexico border.

As of Wednesday, more than 5,000 unaccompanied migrant children are in Customs and Border Protection custody, according to Department of Homeland Security data reviewed by NPR.

Former acting Homeland Security Secretary Chad Wolf says the Biden administration did not heed advice from the former administration about preventing an influx of migrants at the southern border.

Chad Wolf, former acting head of the Department of Homeland Security, says before taking office, the Biden administration was cautioned about a lack of capacity to handle an influx of migrants.

President Biden is grappling with a challenge that he faced when he was vice president: how to address an influx of Central American migrants at the southwestern U.S. border.

Two members of President Biden's National Security Council, Roberta Jacobson and Juan Gonzalez, will travel to Mexico, a senior administration official told reporters.

More than 500 migrant children have spent more than 240 hours in the jail-like detention centers at the border as of Thursday, according to a DHS document obtained by NPR.

The Biden administration wants to work with Central American countries to stem the flow of migration to the U.S., but concerns about corruption means implementing the policies likely won't be smooth.

John Sanders led U.S. Customs and Border Protection under the Trump administration. At least five children died after being detained during the last surge, and he fears "history is repeating itself."

The unaccompanied minors are spending an average of 117 hours in detention facilities, beyond the 72 hours allowed, according to a Department of Homeland Security document.

The House takes up immigration legislation while some GOP lawmakers will travel to the southern border to highlight a surge in migrants. The Biden administration asked FEMA to help with the surge.

The Trump administration had encouraged child welfare officers dealing with unaccompanied minors to share information about potential adult sponsors with immigration enforcement agents.

A record number of minors are being held in warehouse-style facilities as the Biden administration struggles to address a cyclical surge of unaccompanied children and teens crossing into the U.S.

The White House asks Congress for $4 billion in aid for countries in Central America to address root causes of illegal migration, as the number of border crossings into the U.S. spikes.

The Biden administration is granting temporary protected status to over 300,000 Venezuelans in the U.S., providing legal status to individuals who have fled the country — a shift in U.S. policy.

The Biden administration's decision represents a major policy shift from the Trump team, which withstood bipartisan calls to grant the protections to Venezuelans fleeing life-threatening crises.

We look at the the coronavirus stimulus bill just passed by senate, as well as the changes to immigration policy the Biden administration is trying to bring about the U.S.-Mexico border.

Parents and children arriving at the border would be more quickly released within 72 hours, sources say.