The Power Elite by C. Wright Mills, 1956, Excerpts
The very rich have used existing laws, they have circumvented and violated existing laws, and they have had laws created and enforced for their direct benefit. The inner core of the power elite includes men of the higher legal and financial type from the great law factories and investment firms, who are professional go-betweens of economic, political and military affairs, and who thus act to unify the power elite. By the nature of their work, they transcend the narrower milieu of any one industry, and accordingly are in a position to speak and act for the corporate world.
The corporation lawyer and the investment banker perform the functions of the go-between effectively and powerfully. The corporation lawyer is a key link between the economic and military and political areas; the investment banker is a key organizer and unifier of the corporate world and a person well versed in spending the huge amounts of money the American military establishment now ponders. When you get a lawyer who handles the legal work of investment bankers, you get a key member of the power elite.