Noah Haynes Swayne,
McCarthy v. Mann — Opinion of the Court
“ Congress is equally powerless to enact with effect, to-day, that a designated person may have a patent of some parcel of land in which none but government has any spark of interest, and that upon the issue to such patent to-morrow the land shall have been the property of the patentee for the four years past. Therefore the statute produced no retroactive results by virtue of its operating upon facts themselves, and changing them from what they really were. ”
