By Brian O’Connell There’s big money in waiting to collect Social Security, but most U.S. seniors leave that cash on the table. The U.S. government is not hiding the fact that the longer you wait to collect Social Security, the more money you collect. In fact, the concept is fairly straightforward. Here’s the deal, straight from the U.S. Social Security Administration. If you start receiving retirement benefits at age . . . 67, you’ll get 108% of the monthly benefit because you delayed getting benefits for 12 months.70, you’ll get 132% of the monthly benefit because you delayed getting benefit…