US Senate Environment and Public Works Committee Chairwoman Barbara Boxer (D-Calif.) did not hide her displeasure as she opened a Jan. 24 hearing on Environmental Protection Agency Administrator Stephen L. Johnson’s refusal to grant California and 14 other states authority to impose tougher greenhouse gas controls on motor vehicles.“In my many years in the House and in the Senate, I have never seen such disregard by an agency head for Congress and for the committee with responsibility for oversight of his agency,” she said. Four more states are moving toward adopting California’s standards, Boxer said. Johnson, in a prepared statement, said the federal agency had g...