Sen. Elizabeth Warren on Tuesday introduced what she describes as the most ambitious anti-corruption legislation since Watergate. Warren's Anti-Corruption and Public Integrity Act ... aims to nix the influence of big money in politics. The legislation would "padlock" the revolving door in Washington by placing a lifetime ban on lobbying by former members of Congress, presidents and agency heads. The legislation would also expand the definition of who is a lobbyist to anyone who spends any time attempting to influence government. The proposal would also prohibit the world's largest companies, something defined by a company's annual revenue or market capitalization, from hiring or paying any former senior government official for four years after they leave government. Former senior officials would also have to file income disclosures for four years after federal employment. Warren's legislation would also ban members of Congress, cabinet secretaries, federal judges and other top government officials from owning and trading stocks. Currently, members simply need to disclose their stocks and trades. The bill would also create an entirely new office designed to police public corruption, called the Office of the Public Integrity, to strengthen enforcement and investigate possible violations.