WASHINGTON (March 25, 2021)–A letter spearheaded by Senator Sheldon Whitehouse (D-RI) asks AIG, Berkshire Hathaway, Chubb, Liberty Mutual, Travelers and other US insurers to explain how their fossil fuel underwriting and investment policies align with their sustainability commitments. The letter was also signed by Senators Jeff Merkley (D-OR), Elizabeth Warren (D-MA), and Chris Van Hollen …