If I had a million dollars, I’d buy commercial time at the upcoming Super Bowl and run an ad that would say, in big bold letters, “SSI is not Social Security.” I have written dozens of past columns about this topic. But I’ve just got to do so again. It seems to me that just about everyone in this country confuses the Supplemental Security Income (SSI) program with the Social Security program. To clarify, let’s start with some background. I’m sure everybody knows what Social Security is. You get a Social Security number, you work, you pay Social Security taxes, and one day you and possibly some of your dependents collect Social Security retirement benefits. Or you become disabled before reaching retirement age and you and possibly some of your dependents get Social Security disability benefits. Or you die and your widow or widower and/or minor children collect Social Security …