national guard troops as they try to battle cartel smugglers who transport hundreds of migrants across the rio grande. cartels, by the way, authorities are saying, they are getting increasingly brazen. correspondent bill melugin reports from roam marks texas. it s too easy to get across right there. it s thursday evening in roma, texas. we are embedded with the texas national guard in one of the most active cartel hot spots all along the border. when you are looking with thermals over there look like christmas. it s all lit up? yeah. while the sun was still up we saw smugglers bringing illegal immigrants across the rio grande. some were brought back at the shoreline. as night fell the smugglers and the rafts started coming nonstop over and over again. full of illegal immigrants. with more than 100 others waiting on the mexican shoreline. the smugglers in a playful mood with no fear telling us they are raking in the money.