Some Republicans are eyeing repeal of Obamacare’s “Cadillac tax” as part of a larger plan to roll back some of the law’s most unpopular and unworkable provisions. It is certainly a good idea to move legislation this year that begins to push back against Obamacare’s many excesses. But the Cadillac tax is the last provision Republicans should be targeting for repeal right now, and they certainly shouldn’t repeal it without replacing it with something more sensible.