Chuck Henry - yes, Chuck Henry - reports for KNBC. Apparently the video of the story is available at the link:

DOUGLAS, Ariz. -- It's no secret that people sneak into the United States from Mexico every day. But what has been kept under wraps is exactly who is coming in. NBC4's Chuck Henry went deep in the Arizona desert to find out.

It's a place that used to go by the name "Cocaine Alley" because of all the drugs that were smuggled through. But now some officials are more concerned about human smuggling, specifically illegal entry at the border by individuals who are not actually from Mexico. They're called "Special Interest Aliens," because they're coming from countries believed to be a threat.

"People are coming here with bad intentions. I know of 10 that have been detained at my station alone," said a Border Patrol agent whose identity has been withheld at his request. He said this is something that agents have been told not to talk about.

"We know for a fact that people coming from the Middle East are now coming into Mexico and spending a year, even two years in Mexico, to learn how to speak Spanish," the Border Patrol agent told NBC4.

"The key is to pass yourself off as a Mexican," said retired Army Colonel Ben Anderson. He has been following what he calls the terrorist trail and connecting the dots on his website...

"Any American that thinks we have security on our southern border is mistaken, " said California Congressman Dana Rohrabacher...

...NBC4 called the Border Patrol and the Department of Homeland Security asking them to speak on camera about the issues surrounding "Special Interest Aliens." They declined.

See also August's KVOA-TV (Tucson) report "Illegals from terrorist nations are crossing the border into Arizona".