This post has an update to the story linked here:

Also, this morning, there is finally official acknowledgment of my article. Joe Westmoreland, a congressional liaison for Customs and Border Protection, issued a statement this morning confirming that the Mexican paramilitary force was in uniform, and wearing ballistic vests, helmets, carrying automatic weapons, and moving in an aggressive military formation. Exactly as I'd reported on Monday.

Westmoreland appears to work/have worked for Nathan Deal (R-GA), but his remarks don't appear in Google News or on Deal's site that I can see. He probably said it, but where and when might be helpful to know.