BIRMINGHAM, Ala. (AP) — There has only been one prosecution under the Emmett Till Act, even though the law was passed with the promise of $135 million for police work and an army of federal agents to investigate unsolved killings from the civil rights era. Some deaths aren't even under review because of a quirk in the law. Still, proponents are laying the groundwork to extend and expand the act in hopes it's not too late for some families to get justice. In nearly six years since the signing of the law, named for a black Chicago teenager killed after flirting with a white woman in Mississippi in 1955, only one person has been prosecuted: A former Alabama trooper who pleaded guilty in 2010 to killing a black protester in 1965.