LAREDO — If the teenage hitman had stayed locked up in his concrete cell after the first murder, maybe Moises Garcia would still sing goofy Spanish songs to his son. Maybe Noe Lopez, a 27-year-old father of four, wouldn't be buried under a sapling in the city cemetery. Maybe. If a judge hadn't reduced Gabriel Cardona's bail after the second murder charge, perhaps Mariano Resendez would be close to finishing his junior year of high school. If the justice of the peace hadn't decreased Cardona's bail on another murder charge and a charge of engaging in organized crime from a...