Despite longstanding orthodoxy, the Constitution’s enumeration of congressional powers does virtually nothing to limit federal lawmaking. That’s not because of some bizarrely persistent judicial failure to read the Constitution correctly. It’s because the enumeration of congressional powers is not a well-designed technology for limiting federal legislation. Rather than trying to make the enumeration do work that it will not do, decisionmakers should find better ways of thinking about what lawmaking should be done locally rather than nationally. This Article suggests such a rubric, one that asks not whether Congress has permission to do a certain thing but whether a certain kind of lawmaking is more prone to pathology at the national or the ...