Money & SavingsTake a look at AARP Executive Vice President John Rother’s strong response to criticism of Social Security by Washington Post’s Robert Samuelson: Our nation will need smart and fair strategies to solve its long-term fiscal challenges. Unfortunately, Robert Samuelson’s latest attack on Social Security (“Why Social Security is welfare,” March 7) smacks more of a personal obsession than an attempt to explain the many factors causing our budget problems, and the many potential ways to address them. More troubling, it …