At least 16 former members of Congress who left mid-term since 1990 went from Capitol Hill to lobbying firms or companies that hire lobbyists, an analysis by the Center for Responsive Politics revealed.

The report links the sources of campaign cash for those former lawmakers with their lobbying activities after resigning. For example, former Rep. Larry Combest, R-Texas, resigned in 2003 and started his own lobbying firm, Combest Sell & Associates, which serves mostly agriculture-related clients. While a congressman, Combest received more campaign cash from agribusiness than any other sector, for a total of $1.1 million between 1989 and 2003, according to CRP.