The United States' southern border bristles with technology and manpower designed to catch illegal immigrants and drug smugglers. Since 1986, the government has spent hundreds of billions of dollars on fences, aircraft, detention centers and agents.
But even as federal budgets shrink and illegal immigration ebbs, experts say that there's no end in sight for the growth of the border-industrial complex.
Hi! Are you a gambler? Do you like to bet football? Then this is your lucky day, for if you'll just stay tuned, I'm gonna offer you a free money-back guarantee: how you, too, can pick an NFL winner. Just don't turn that dial, and listen to this important message.
AUDIE CORNISH: Now a correction. Followed by your letters about we made you cry. Correction first. On Friday's program, in a story about Amazon's latest Kindle device, we said that Apple does not offer an iPad with a 4G wireless connection. In fact, some iPad models do include a 4G connection.
MELISSA BLOCK, HOST:
And now, on to those tears. They were shed over a connection of a different type.
(SOUNDBITE OF SONG, "AMERICAN PIE")
DON MCLEAN: I met who girl who sang the blues, and I asked her for some happy news.