The chief of enforcement at the Securities and Exchange Commission took issue with a U.S. District Court judge’s rejection this week of the agency’s proposed $285 million settlement with Citigroup over a collateralized debt obligation backed by MBS that went sour, and defended the deal as the best available course of action, given the restrictions under current law. Robert Khuzami, director of the SEC’s Division of Enforcement, responded to a ruling announced early this week by U.S. District Court Judge Jed Rakoff in Manhattan in which the judge rejected the multi-million-dollar...