More than 240 solar energy companies are pressing the Commerce Department to issue negative rulings in a set of probes into solar products imported from Southeast Asia, warning that affirmative determinations would constitute an “improper expansion” of U.S. trade remedy law. In a Nov. 16 letter to Commerce Secretary Gina Raimondo, released by the Solar Energy Industries Association, the companies contended there was “ample evidence” to support negative determinations. The probes, launched earlier this year, involve claims by domestic manufacturer...