By Diane Bartz WASHINGTON (Reuters) -The U.S. House of Representatives on Thursday approved a bill that would sharply raise fees for antitrust reviews of the biggest mergers and strengthen state attorneys general in antitrust fights. The bipartisan bill, which has yet to pass the U.S. Senate, combines a merger fee bill introduced by Representative Joe Neguse, a Democrat, and a measure to mandate that state attorneys general can pick the venue for antitrust lawsuits, which was introduced by Representative Ken Buck, a Republican. The bill, which passed the House 242-184, is one of several measur…