Washington (CNN) – Former President Bill Clinton compared efforts by Republicans to change voting laws across the country to Jim Crow laws and poll taxes that historically disenfranchised African American voters. Speaking before a group of liberal youth activists Wednesday, Clinton said laws in states like Florida and New Hampshire are aimed at limiting voter turnout and keeping young people from the ballot box. "There has never been in my lifetime, since we got rid of the poll tax and all the voter Jim Crow burdens on voting, the determined effort to limit a franchise that we see today," Clinton said at Campus Progress's annual conference in Washington.