70 P.2d 435 1962) (en bane); In re Opinion of the Justices, 1 N.H. 563, 198 A. 249 (1938); Waddell Mamat, 271 Wis. 176, 72 N.W.2d 7 (1955); see generally82 C.J.S. Statutes § 435 at 1010-11 (1953). Thus, to hold that Congress did not intend to apply the "dangerous person" provision retroact- ively does not cr