House Speaker Nancy Pelosi was one of the dignitaries on hand as President Obama signed the Affordable Care Act on March 23, 2010. The Supreme Court will start hearing arguments on the law's insurance mandate on March 26. (Associated Press)

House Speaker Nancy Pelosi was one of the dignitaries on hand as President Obama signed the Affordable Care Act on March 23, 2010. The Supreme Court will start hearing arguments on the law's insurance mandate on March 26. (Associated Press)