The SEC (Securities and Exchange Commission) is the regulatory body that oversees and enforces securities laws in the United States. It was established in 1934 to protect investors, maintain fair and orderly markets, and reduce systemic risk. The SEC is divided into five divisions that focus on different areas like corporation finance, trading and markets, investment management, enforcement, and risk strategy. The SEC interprets and enacts securities laws and oversees market participants like stock exchanges, broker-dealers, and investment advisers. Its goals are to promote investor protection, fair markets, and risk reduction.