This column reports on several significant representative decisions from the U.S. District Court for the Eastern District of New York. Judge Kiyo A. Matsumoto denied defendant's motion to withdraw his guilty plea and dismiss the indictment charging him as a felon in possession. Judge Frederic Block dismissed an action for a declaration holding New York's ban on assault weapons unconstitutional. And Magistrate Judge Lee G. Dunst granted a motion to disqualify counsel.