King & Spalding LLP added Karl R. Heisler as a partner to its government matters practice and as a member of the environmental, health and safety team.Heisler’s practice covers incident response and enforcement defense, including environmental litigation, regulatory counseling, government investigations and transactional concerns.He was previously a partner and co-head of the internal environmental investigations and incident response practice at Katten Muchin Rosenman LLP.• Chuhak & Tecson P.C …