FILE - In this June 1, 2011, file photo House Budget Committee Chairman Paul Ryan, R-Wis., walks with Rep. John Sullivan, R-Okla., as House Republicans leave the White House after their

 

              FILE - In this June 1, 2011, file photo House Budget Committee Chairman Paul Ryan, R-Wis., walks with Rep. John Sullivan, R-Okla., as House Republicans leave the White House after their
FILE - In this June 1, 2011, file photo House Budget Committee Chairman Paul Ryan, R-Wis., walks with Rep. John Sullivan, R-Okla., as House Republicans leave the White House after their meeting to discuss the debt ceiling with President Barack Obama. In Congress, Ryan initially established his reputation mostly behind-the-scene, impressing GOP colleagues with his willingness to delve into complex number-crunching and budgetary minutia. But in the past couple of years he's become one of the highest-profile and influential members of the House, to the point that he engaged in verbal showdowns with President Barack Obama. (AP Photo/Charles Dharapak)