In response to student activists, and in step with a nationwide trend among college endowments, the University System of Maryland Foundation has pledged to avoid investing in four companies it believes help the government of Sudan commit genocide in the country's Darfur region... Laura Brewer, a...student who was one of the activists urging the system to denounce investment in Sudan,...criticized the foundation for singling out for disinvestment only four companies that service the Sudanese government's oil economy:...PetroChina and Sinopec;...Nam Fatt [joint venture Petronas, Land & General, Mitsui]; and...Oil and Natural Gas Corp. [ONGC] "These are definitely some of the worst offending companies, but I think there are others that are equally harmful. Why pick these?" Brewer asked.