Frank Lautenberg + minimum net worth + $55.07 million,  The New Jersey senator would make the cut to be among the 50 richest nembers of Congress on his own, but he also got a sizable boost from his spouse, Bonnie Englebardt Lautenberg, and her expansive stake in New York real estate.

Lautenberg, who founded the data-processing company ADP, maintains two blind trusts, one valued at $5 million to $25 million and the other at $1 million to $5 million. He reported the sale of a trust, previously valued at $1 million to $5 million, in a transaction of those same values.

Nonetheless, his minimum net worth saw a 10.8% increase in 2011, or more than $5 million, likely due to multiple stock purchases and other new investments by various trusts held by his wife.

According to Lautenberg's annual report, five of those transactions were valued at "over $1 million." Lautenberg listed no debts in 2010.