Greg says this never happens....

I trust Greg's experience implicitly.

Follow This Interview to the Sales of Guns, Ammo and Providing Gun Repair Trade

I would point out that this is the 3rd known law suit that has been given the go-ahead by federal courts against former Sec.of Defense, Donald Rumsfeld for torturing U.S. citizens.  There is serious and credible reason to believe there  may be more.

I believe Mr. Vance is a hero, and a true patriot, for the risks he took, and the pain he underwent, in addressing the illegal sale of firearms, ammo, and firearm repair.

Guns Kill People; the U.S. to Mexico Firearm Pipeline

From the AP, by way of Strib:

New Mexico border town abolishes police force in latest fallout from gun smuggling probe

The village Board of Trustees voted to abolish the department on July 7.
The next day, jailed former trustee Blas Guitierrez submitted his letter of resignation.
He is one of 12 people who were arrested in March for their alleged roles in a gun smuggling ring. Former Mayor Eddie Espinoza and former police chief Angelo Vega are among those charged.
DEMING, N.M. - A New Mexico border town has abolished its police department in the wake of a gun smuggling case that involves the former mayor and police chief.The village of Columbus will now rely on the Luna County Sheriff's Office for law enforcement. Sheriff Raymond Cobos tells the Deming Headlight that his deputies have always patrolled the area anyway and he'll shift resources to cover the village.

So.....it isn't just a problem for the feds....but this does argue for the assertion that U.S. guns are supplied, in significant quantity, to Mexico, especially in conjunction with drug activity.