House Budget Committee Chairman Paul Ryan (R-Wisc.) is expected to endorse Republican frontrunner Mitt Romney before Wisconsin's GOP primary next Tuesday, according to media reports. Ryan would be the latest in a string of high-profile endorsements for Romney this week, as party leaders have increasingly coalesced around the former Massachusetts governor's campaign. The Wisconsin lawmaker would join popular freshman Sen. Marco Rubio (R-Fla.) and former president George H. W. Bush in signaling support for Romney this week.
