Some conservatives see a silver lining in the ObamaCare ruling. But it's exactly the big-government disaster it appears to be. Justice Roberts's opinion declared that the Constitution's Commerce Clause does not authorize Congress to regulate inactivity, which would have given the federal government a blank check to regulate any and all private conduct. The court also decided that Congress unconstitutionally coerced the states by threatening to cut off all Medicaid funds if they did not expand this program as far as President Obama wants. All this is a hollow hope. The outer limit on the Commerce Clause in Sebelius does...