Diane Fienstein became the mayor of San Franciso where she deregulated laws which allowed her husband's business to prosper.

with only government wages she has managed to become the 4th richest person in the Senate.

unofficial link discussing the mystery of Fienstien's wealth

Washington Times link , Fienstein uses federal power to help her husband's' company

"Senate rules state members must avoid conflicts of interest, or the appearance of conflicts of interest"