The power to mandate health insurance is the power to mandate almost anything. (snip) Under our system of government....Congress has only those powers that are explicitly enumerated in the Constitution, with the rest "reserved to the states respectively, or to the people"....An all-encompassing Commerce Clause that authorizes any mandate, restriction, or prohibition aimed at behavior that might affect interstate commerce (subject to specific limits such as those imposed by the Bill of Rights) is plainly inconsistent with this federal system. he Obama administration therefore needs to explain why its constitutional rationale for the health insurance mandate—that the failure to obtain...