His advocacy has forced reforms in the health insurance industry to assure critical health care coverage and lower pharmaceutical drug prices. He has worked relentlessly to eradicate corruption in state government and make state contracting accountable, fair, honest and transparent.

He has successfully fought unfair utility rate charges, air pollution causing acid rain and other environmental wrongdoing, and scams and frauds victimizing consumers.

Blumenthal previously served as administrative assistant to U.S. Sen. Abraham A. Ribicoff, aide to former U.S. Sen. Daniel P. Moynihan when Moynihan was Assistant to the President of the United States, and law clerk to U.S. Supreme Court Justice Harry A. Blackmun.
He was U.S. Attorney for Connecticut, the state