Many immigrants (especially those from El Salvador, Guatemala, and Honduras) in ICE detention facilities presented themselves at the border and legally requested asylum. For more information on "northern triangle" and why these immigrants are fleeing their homeland, read https://www.cfr.org/backgrounder/central-americas-violent-no...
This is an ongoing and growing challenge for our immigration system. In FY 2017, as instability in Central America’s Northern Triangle showed few signs of ending, immigration judges decided over 30,000 asylum cases, a considerable increase over the roughly 22,300 asylum cases decided in FY 2016, and the most [since] FY 2005. (source: https://immigrationforum.org/article/fact-sheet-u-s-asylum-p...)
This is an ongoing and growing challenge for our immigration system. In FY 2017, as instability in Central America’s Northern Triangle showed few signs of ending, immigration judges decided over 30,000 asylum cases, a considerable increase over the roughly 22,300 asylum cases decided in FY 2016, and the most [since] FY 2005. (source: https://immigrationforum.org/article/fact-sheet-u-s-asylum-p...)