William Strong, United States v. Claflin — Opinion of the Court
“ It is not a rule for the future. It certainly is not conclusive that the second section was repealed or superseded by the act of 1866, or by any other act prior to the enactment of the revision. Whether a statute was repealed by a later one is a judicial, not a legislative question. And even a declaratory act, or an act directing how a former act shall be construed, is inoperative on the past, though controlling in future. ”
