(September 14, 2018, 1:52 PM EDT) -- NEW YORK — A federal district court’s order granting a defendant in a securities and wire fraud criminal action a new trial pursuant to Second Circuit U.S. Court of Appeals precedent should be vacated because the District Court erred in determining that a witness’ implication that he mistakenly believed that the defendant was his investment agent in residential mortgage-backed securities (RMBS) and owed him a fiduciary obligation ran afoul of the precedent, the U.S. government argues in a Sept. 4 appellant brief filed in the Second Circuit (United States v. Ross Shapiro, et al., No. 18-2007, 2nd Cir.)....