HOUSTON, Texas - Jazmine Barnes, age 7, was shot to death and her mother was wounded as they left a Walmart parking lot Sunday morning. Now authorities are trying to track down her killer. Jazmine and her mother, 30-year-old LaPorsha Washington, were shot as they left the store where they had shopped for juice for their breakfast. Washington's four daughters, ages 6, 7, 14 and 15, were all in the car at the time of the shooting. Jazmine was killed, and the 6-year-old girl was cut by glass. Washington was also wounded, but survived the shooting. Deputies said the suspect...