sara carter. sarah, i know it's bad. we've been reporting about this for a long period of time. but every day it seems to get worse. >> it does. the experience on the border isn't just a solitary instance. this is been happening over and over. the past week, the drug cartels it appears, suspected cartel members have beenn actually moving into the rio grande river area. they've been heavily armed with ak-47s. they've been wearing what they appeared to be mexican military or police uniforms or tactical gear, they have been taunting the national guard come the texas national guard, as well as the texas department of public safety. there is enormous concern that they are trying to get a reaction from our law enforcement. that means they are trying to persuade them to shoot back or get them to act in a certain