• Immigration detention is civil and for the purpose of ensuring appearance of aliens at removal proceedings, and for the actual removal itself.
• Congress recognizes both qualitative and quantitative problems associated with illegal immigration in the processes and detention mechanisms it directs.
• Claims of asylum and fear of return are a major loophole that result in release of aliens who then disappear.
• Lack of detention space to hold aliens also contributes to the collapse of immigration and border controls, resulting in a system of “catch-and-release” that encourages more aliens to attempt to enter illegally or to overstay their visas.
• Immigration and border security controls are at a crisis point, due to dismaying case backlogs currently clogging the immigration courts (more than 750,000 cases) and the number of fugitives (900,000) under orders of removal who are loose on the streets of the United States.
• Migrant caravans may force both legislators and the administration to take effective remedial action to close legal loopholes and to declare a mass immigration emergency to ensure continued control of our external border(s). Here.

Have Terrorists Crossed Our Border?

An initial count of suspected terrorists encountered en route and at the U.S. Southwest Border Since 2001

By Todd Bensman on November 26, 2018

“From intelligence community sources with access to protected government information, the Center for Immigration Studies has learned that at least 100 migrants from “countries of interest”,3 encountered between 2012 and 2017 at or en route to the southern border, matched the U.S. terrorism “watch lists” known as the Terrorist Identities Datamart Environment (TIDE), or the Terrorist Screening Database (TSDB). The number of such law enforcement land border encounters with such watch-listed migrants has risen drastically each year after 2012, according to the information, which is deemed credible but could not be independently corroborated.” Here, from CIS.org.

See also:

Central American Countries Are Helping Middle Easterners Illegally Enter The United States

Panama and Costa Rica are chokepoints on the migrant trail followed by people from other continents seeking easier U.S. entry through our porous border with Mexico.

“Qoordheen had been smuggled from Zambia to Brazil, passed through Panama, and was making his way north through Costa Rica when the Americans had him arrested here, 20 miles inside Costa Rica, according to an American intelligence official with knowledge of the case who spoke on condition of anonymity.”

Here.