Begging the Question (from a guest blogger)
One could differentiate the two cases on the ground that the Defense of Marriage Act is constitutional while ObamaCare is not. But that begs the question. Until the Supreme Court has ruled, the constitutionality of both laws is a matter of dispute. (James Taranto, "Best of the Web Today: Obama Disengages," Wall Street Journal (wsj.com), March 24, 2011)