Rep. Darrell Issa is the richest member of Congress with a total worth of $768 million altogether, according his most recent financial disclosure. Roll Call has placed the California Republican in the number one spot for the second year in a row with a net worth of $357 million and a minimum of $432 million in assets.However, his actual worth may be far more than what he is required to report, or far less, Roll Call notes.Issa reportedly included seven high-yield bonds in his disclosure that are worth more than $50 million, but it doesn't say how much those bonds are actually worth. It is possible that they are each worth hundreds of millions of dollars — which would make his wealth far more than what was disclosed.In the same vein, his wealth might actually be lower than what is disclosed.The congressman also has two liabilities in the form of personal loans — a $25 million loan from Union Bank and a $50 million loan from Merrill Lynch.While the loan from Merrill Lynch is put in the $50 million category, it could be worth significantly more than what Issa has to report.Following Issa is Republican Rep. Michael McCaul of Texas, Democrat Rep. John Delaney of Maryland, Democrat Jay Rockefeller of West Virginia, Democrat Sen. Mark Warner of Virginia, Democratic Rep. Jared Polis of Colorado, Democratic Sen. Richard Blumenthal of Colorado, Democratic Sen. Dianne Feinstein of California and Democratic Rep. Suzan DelBene of Washington, who make up the top ten wealthiest members of Congress.The poorest congressman is California Republican Rep. David Valadao, with a net worth of negative $3.7 million.