UPDATE 1-U.S. states, Rockefellers clash with U.S. House panel on Exxon climate probes
June 24, 2016 at 18:06 PM EDT
HOUSTON, June 24 (Reuters) - With a number of U.S. states proceeding with investigations of Exxon Mobil Corp's record on climate change, the attorney general of Massachusetts and investment funds of the Rockefeller family on Friday told a Congressional committee it lacked powers to oversee those probes.