8. Rep. Scott Peters, D-Calif. -- $44.7 million
He may be a newbie to Congress, but Rep. Scott Peters, D-Calif., has already cracked the millionaires club on Capitol Hill. Peters once worked as an economist for the Environmental Protection Agency and served in a number of positions in San Diego, from president of the San Diego City Council to San Diego port commissioner. His wife, Lynn Gorguze, is president and CEO of Cameron Holdings, a private equity company.