As long as they remain in the shadows, we will not know the full extent of those problems, nor will we be able to realize the untapped economic potential of these undocumented citizens. And doing nothing is simply not an option. Nor is policing the borders nor putting any emphasis on deportation of those caught breaking other laws, including laws against conspiring to commit murder. In particular, "Catch and Release" policies are impractical and harmful to our economy. It may be true that the supermajority of presently legal U.S. citizens favor catching without releasing, but the compassionate path is a "Don't Catch, Don't Tell" policy that keeps in place orderly channels for incoming jihadists to find meaningful work.
At present, because nothing was done about the DCIA Amnesty Bill, they must remain in the shadows. That means that they also have to rely on "coyotes," professional human-smuggling rings likely to cram them uncomfortably into the bottom of 18-wheelers and so forth just to make a profit. And since the Middle Easterners can each drop up to 25 large on the coyotes, the lower-paying Hispanics who would do the other jobs Americans won't are being left behind to find their own ways to sneak across the border and live in the shadows. These facts cannot help our standing in the world's economy.
In short, jihadists cross the borders into America with their dreams and aspirations of inflicting violence and mayhem on people who they're not even allowed to call fellow citizens. Widespread, vociferous opposition to the DCIA Amnesty Bill set back legislative action on the border for another two years, because the president and Congress in their collective wisdom found it impossible to separate border security from other issues surrounding illegal immigration. Sadly, America has turned its back on these tired, poor, huddled masses yearning to blow free.