Thomas “Tip” O’Neill, Ronald Reagan, Alan Greenspan, Bob Dole, Dan Rostenkowski, Claude Pepper, Bob Michel

** FILE ** In this April 20, 1983 file photo, House Speaker Thomas “Tip” O’Neill, right, leans forward to ask President Ronald Reagan a question during the Social Security bill signing ceremony on the South Lawn of the White House. A reader-submitted question about Social Security taxation is being answered as part of an Associated Press Q&A column called “Ask AP.” Also pictured, from left: economist Alan Greenspan, head of the president’s Social Security task force; Sen. Bob Dole, R-Kan.; Reagan; Rep. Dan Rostenkowski, D-Ill.; Rep. Claude Pepper, D-Fla. partially obscured; Rep. Bob Michel, R-Ill. (AP Photo/Barry Thumma, File)