You've heard the saying: "The rich get richer?"    Perhaps nowhere in America is that better illustrated than the U.S. Congress.   Capitol Hill's newspaper, Roll Call, crunched the numbers and found that the net worth of all members of Congress rose an astounding 25% over the past couple of years.      Roll Call found that 40% of Congress  – 219 members- are millionares.   That's an average net worth of 3.8 million dollars per lawmaker.     Here's Brooke's interview with Roll Call's investigative editor Paul Singer, who crunched the numbers for the article.