(March 30, 2020, 1:51 PM EDT) -- WILMINGTON, Del. — Shareholders in a pipeline company on March 9 filed a class action complaint in Delaware state court contending that the former chairman and chief executive breached their fiduciary duties when they approved a merger with TransCanada Corp., which operates a pipeline that carries hydraulically fractured oil and gas from Canada to the United States (Police & Fire Retirement System of the City of Detroit v. Robert C. Skaggs, et al., No. 2020-0179, Del. Chanc., New Castle Co.)....