Rep. Paul Ryan (R-Wis.) took a swipe Monday at Republican presidential candidate Newt Gingrich after the former House Speaker criticized hiss proposed Medicare reforms. "With allies like that, who needs the left?" Ryan told guest host Raymond Arroyo on conservative talker Laura Ingraham's radio show. Ryan, the chairman of the House Budget Committee, defended his 2012 budget proposal that includes significant reforms to Medicare. Gingrich on Sunday distanced himself from Ryan's plan, which would transform the program into a voucher-based system for Americans under the age of 55. "I don't think right-wing social engineering is any more desirable than left-wing...