Immigrant rights groups have a message for unsympathetic politicians around the country: Change your stand or risk getting voted out of office. A coalition of unions, Hispanic activists and religious groups is trying to convert the massive street protests of recent months into long-term political power by launching nationwide citizenship and voter registration drives Saturday in at least 19 states. The effort known as "Democracy Summer" aims to register a million new voters and convince many of the 8 million legal residents in this country to apply for citizenship. Such applications are already up nearly 20 percent over past year...