Carter's Country probably sells more guns than any other Texas dealer.
This is basically old news with a different twist, last few times around it was "criminal's guns" now its "mexican drug cartel guns".
Sell more guns, you will have more turn up when stolen and traced.
Bill Carter lost a lot of support in Houston a while back (in the Clinton ere) when he came out in support of some bills to restrict gun shows, but I think he's seen the light as he first got hit with the "crime gun supplier" label not much later, the state level gun show restrictions failed, although the Feds have made it so out of state dealers can no longer sell here unless they transfer through an instate dealer which basically doubles the paperwork involved so they pretty much don't bother coming anymore.