The Texas senator insists he's never favored a path to legalization for undocumented immigrants, but many of his old colleagues say that's not true. For Latino Republicans who have known Ted Cruz over the last 15 years, the candidate stumping across the country on an anti-immigration platform is not the rising talent they once worked with on the George W. Bush campaign, in the Bush administration, and then as Texas Solicitor General. The Ted Cruz of those years was a whip-smart and audaciously ambitious lawyer who lent his considerable intellectual heft to the policies many Latino Republicans cared most about,...