Washington, D.C. -- A Senate committee is investigating President George Bush's nomination of Donald Schregardus as assistant administrator for enforcement and compliance for the U.S. Environmental Protection Agency (EPA), following a federal report claiming that the Ohio agency he ran from 1991 to 1999 failed to implement an acid rain program. Independent James Jeffords, the Senate committee chairman, said that the investigation will take longer than originally expected, and he is not sure if or when Schregardus will be confirmed.