Republicans completely missed the easy solution to their business tax problem

The weirdest part of the Republican tax bill almost sunk the whole effort earlier this week. As you've probably heard, the centerpiece of the tax plan is a massive cut in the federal tax that corporations pay on their profits. But technically only C-corporations pay it — about 5 percent of all businesses, as of 2011. The rest pay taxes by an alternative route. Sens. Ron Johnson (R-Wisc.) and Steve Daines (R-Mont.) were both upset that the latter group is getting a raw deal compared to...