On September 24, 2003, Senator Joseph Lieberman sent a formal letter to the White House asking for details of these ties, and the nature of the help Cooney had received. He also inquired about the lawsuit the Competitive Enterprise Institute (CEI) had filed on August 6, 2003 against the administration under the little-used Data Quality Act to invalidate the National Assessment of the Potential Consequences of Climate Variability and Change, which formed the basis for many of the conclusions in the Climate Action Report. Lieberman charged that the suit was apparently an attempt to have the National Assessment (and therefore the Climate Action Report) withdrawn.