United States v. Lara-Unzueta, 735 F.3d 954, 959 (7th Cir. Nov. 19, 2013) (district judge was not disqualified from ruling on defendants motion to dismiss indictment in illegal reentry case on the grounds that he had served as served as District Counsel for the INS in Chicago during 1997"1998, when the INS was the agency responsible for the defendants deportation proceeding, because he has not served in governmental employment and in such capacity participated as counsel, [or] adviser ... concerning the [current] proceeding or expressed an opinion concerning the merits of the particular case in controversy.); citing 28 U.S.C. 455(b)(3) (emphasis added).