Doan also faced accusations of interfering with the extension of a contract involving Sun Microsystems. Sun Microsystems announced the end of its long-standing contract with the federal government in mid-September 2007. However, the week before Sun announced its decision, Doan alerted Congress to factors that may provide disincentives for companies to do work with the federal government. Doan expressed her concerns in a Sept. 7, 2007, letter to Sen. Charles Grassley (R-IA) about the credibility of the GSA Inspector General's office and how that credibility gap can adversely affect relations with vendors, stating: