Hundreds of Dallas school kids have been arrested for carrying "cheez" heroin to school. More than a dozen have died after using it. The problem has hit the Hispanic communities the hardest because Mexican organizations are the ones bringing the black tar heroin into Texas. So what's the solution to stopping this problem? Dallas officials think they have the answer. For only $2, kids can buy a deadly heroin mixture called "cheez." "This is all black tar heroin mixed with an over-the-counter sleep aide. It is a snortable form of the drug," said Jeffrey Stamm, Assistant Special Agent in Charge for...