Douglas, a US Supreme Court justice and author, practiced and taught law early in his career, before becoming a member of the Securities and Exchange Commission (SEC) in 1936. As SEC chairman, he engineered the reorganization of US stock exchanges, instituted measures aimed at protecting small investors, and began government regulation of the sale of securities. In 1939, the president appointed him to the Supreme Court. For what controversial act did Congress attempt to impeach Douglas? Discuss