In an annual ritual that takes place every May, the AFL-CIO releases its “Executive Paywatch” report to publicize what it considers to be the excessive compensation of the CEOs of America’s biggest multinational firms. The nation’s largest labor federation reports this year that the typical CEO running an S & P 500 firm received total compensation of $12.4 million in 2015 while the average rank-and-file worker was paid just $36,875 — a pay gap of 335-to-1. But the AFL-CIO can only get such an inflated pay ratio by applying a series of statistical sleights... ...the AFL-CIO only considers a very...