text: because congress lacks general constitutional authority to punish crimes,most federal offenses include a jurisdictional element to tie the substantive crime to one of congress enumerated powers.state legislatures are not similarly constrained,and so state crimes do not need such a jurisdictional hook.that discrepancy creates the issue here whether a state offense lacking a jurisdictional element but otherwise mirroring a particular federal offense can be said to be described by that offense.dictionary definitions of the word described do not clearly resolve this question one way or the other.rather,two contextual considerations decide this case a penultimate sentence and a background principle that distinguishes between substantive and jurisdictional elements in criminal statutes.