OPPOSING IMMIGRANTS ... AND REPUBLICANS. Congressman Tom Tancredo (R-CO) -- a 2008 White House hopeful and the leading Hill advocate of imposing a radical crackdown on immigration into the US -- broke with the GOP in the upcoming California special election for the congressional CD-48 seat recently vacated by SEC Chair Christopher Cox (R). Although ten of the 17 candidates -- including frontrunners State Senator John Campbell and former Assemblywoman Marilyn Brewer -- are Republicans, Tancredo formally endorsed an ideological ally. Tancredo endorsed American Independent Party nominee Jim Gilchrist, the founder of the "Minuteman Project" of citizen border patrols. "I...