CEI's Alex Nowrasteh has a commentary on Townhall.com illustrating how restrictive immigration policies confound security. Twenty-three Somalis with suspected ties to an Islamist group were mistakenly released from a Mexican prison last January, and their whereabouts now are unknown. He continues:
Forcing immigrants underground creates an enormous black market where terrorist activities and serious crimes can continue undetected. If legal immigration were much easier, the American government would know who was entering the country and do a better job in screening out criminals and suspected terrorists.
I'm leery of touting terror threats for any reason beyond alerting the public to information they can use for national and self-protection. A small group of possible terrorists in Mexico is far from doing any significant harm and not particularly worrisome.
But this story illustrates how the border security that matters gets harder---and how much tax money gets wasted---when our policies make legal immigration difficult or impossible. The government is preoccupies with workers made minor criminals by their extraordinary efforts to improve their and their families' circumstances.