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Kamala Harris will play a “diplomatic” role when addressing the immigrant sure at the Mexico-U.S. border, according to Fox News.

Harris will lead “diplomatic efforts to engage Mexico and the Northern Triangle to address the root causes of migration and to oversee the flow and use of US aid.”

Biden appointed Harris to lead his administration’s efforts to address the crisis last week.

Detention centers and holding facilities have been maxed out.

The Biden administration will reinstitute funding to aid development and immigration enforcement in border nations.

White House press secretary Jen Psaki said Harris is “focused on addressing root causes in the region.”

“They will all work together, but the vice president’s focus is on the region, root causes, and engaging with governments directly,” Psaki said.

“As the president has said, there are many factors that lead [migrants] to leave these countries,” Harris said.

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“While we are clear that people should not come to the border now, we also understand that we will enforce the law and that we also, because we can chew gum and walk at the same time, must address the root causes that cause people to make the trek.”

From Fox News:

More than 15,000 unaccompanied migrant minors are in custody at federal facilities, according to recent reports. U.S. Customs and Border Protection reported encounters with more than 100,000 migrants in February alone.

Lawmakers from both parties have either visited border facilities or scheduled trips amid the mounting crisis. A group of White House officials were set to tour a Texas facility used to house unaccompanied minors on Wednesday.

Neither Biden nor Harris has visited the southern border since taking office, though the president recently said that he would do so “at some point.”