U.S Rep. Sheila Jackson Lee today said she has called for congressional hearings to investigate what she calls ''the many downfalls" of the Harris County judicial system. Recent incidents, including a grand jury's decision not to indict a Pasadena man who shot and killed two men suspected of burglarizing his neighbor, have brought into question whether the system is fair and unbiased, she said. The Democrat, who represents District 18, said she is also concerned and frustrated about derogatory e-mails circulated in the Harris County Sheriff's Offices, the mishandling of DNA by the Harris County District Attorney's Office and the...