President George W. Bush signed legislation today that lets local governments bar the investment of state assets in companies with ties to Sudan... The legislation would make it easier for pension funds to sell their investments and states to prohibit debt financing for companies that do business in Sudan. Investors and state and local governments could cut ties with four sectors in the Sudanese economy that generate the most profits: oil, power production, mineral extraction and military equipment. [refers to PetroChina, ABB, Alcatel, Siemens, Shell, Total]