Medicare plan

( AP Photo/Sitthixay Ditthavong / August 23, 2012 )

In this photo taken Aug. 21, 2012, Mike O'Malley, 55, left, and Sharon O'Malley, 53, pose for a photo in Chicago. Mitt Romney's Medicare plan would have very different effects on couples and siblings just a few years apart in age. It's leading to comparisons _ and sometimes perhaps a touch of envy The GOP presidential candidate wants to revamp Medicare for future retirees _ anyone now 54 and younger. Starting in 2023, they'd get a fixed amount of money from the government to pick private health insurance or a government plan like Medicare.