House Budget Committee Chairman Rep. Paul Ryan, Wisconsin Republican, has developed a proposal with Sen. Ron Wyden, Oregon Democrat, that would keep traditional Medicare as an option, competing with private plans. People now 55 or older wouldn't have to make any changes. (Associated Press)

House Budget Committee Chairman Rep. Paul Ryan, Wisconsin Republican, has developed a proposal with Sen. Ron Wyden, Oregon Democrat, that would keep traditional Medicare as an option, competing with private plans. People now 55 or older wouldn't have to make any changes. (Associated Press)