Republican Rep. Darrell Issa, who began building his fortune 30 years ago by founding the company that makes Viper car alarm systems, tops the list this year with an estimated net worth of $355.4 million. Issa's estimated net worth has more than doubled in the past year, according to the , in which he ranked third.Although a Republican tops the new list, Democrats hold seven of the spots in the top 10.
Using financial disclosure forms for the 2012 calendar year, The Hill calculated each amount by subtracting each lawmaker's liabilities from assets. The congressional disclosure forms, however, only require lawmakers to provide ranges instead of exact numbers, so the amounts listed here are "conservative estimates" based on information provided.You can find more information about where the lawmakers made their money by clicking on the links below.
Here are this year's top 10:
1.(Source: The Hill. Photo: Chip Somodevilla/Getty Images)