As promised, U.S. Bureau of Reclamation Commissioner Brenda Burman on Friday wrote a letter of support to the Imperial Irrigation District, backing efforts to win substantial Farm Bill funds to restore the dwindling Salton Sea. But she stopped short of linking a pledge of funds to the seven-state Colorado River drought package that she is pushing to complete in two weeks. Instead, she said adopting the drought plan was the single biggest step to both preserving drinking water across the West and to preserving the Salton Sea.