Obama and Biden do understand the tax consequences and history. These are not stupid men. But , the history does not serve their liberal agenda. They think they know better and without their spoken 'truth' they have nothing to stand on. So, whether conciously or not, they lie. And in their profession (politics) if you lie enough times, stupid people start believing it as the truth. It would be refreshing to have a government that stops lying and at this time cuts ALL social programs and foreign aid, then start over. Who knows maybe a miracle would happen?