But failure to fully address the causes of why people leave these South American countries.

"Kevin McAleenan on Central American migration and U.S. detention" PBS NewsHour 9/3/2019

Excerpt

SUMMARY:  Acting Sec. of Homeland Security Kevin McAleenan recently met with El Salvador's new president, Nayib Bukele, about efforts to stem the tide of migrants heading north toward the U.S.  McAleenan sits down with Amna Nawaz, who also made the trip, to discuss what migration levels would be acceptable to the Trump administration and the U.S.-Mexico “partnership” to manage their shared border.