The woman at the podium was angry about U.S. immigration policy. She loudly criticized President Bush, Senate Republicans and business interests, telling a Tucson audience they were working against the kind of solution that most Americans want. "We're going to hold Republicans responsible," she said as the crowd of more than 100 responded with loud applause. Democrats? Immigration rights advocates? Far from it. This was a meeting of Republicans. Few issues divide the GOP like illegal immigration, as this gathering at a Downtown hotel on Friday morning showed. On one side are conservatives like Bay Buchanan, the woman who fired...