In light of these facts, the debate is backward. Republicans in the House of Representatives are focused on further militarizing the border against the people who are no longer crossing it; at the same time, they are loath to do anything about the millions of real undocumented immigrants who are the legacy of the last buildup. At best, we can hope to waste tens of billions of dollars on further enforcement in return for a lengthy and complicated path to citizenship. At worst, we’ll do nothing — in which case this will be known as the era of wasted opportunity.

via Everything you know about immigration is wrong.