It's not what you don't know that can hurt you; it's what you think you know that just ain’t so that will kill you. Time has taught me that this piece of “country” wisdom is as important as any in the pursuit of public policy. Ignorance based on false facts is deadly in public policy. Take the National Popular Vote Interstate Compact as an example. The National Popular Vote plan is an interstate compact in which the compacting states agree to award their electoral votes to the person who gets the most votes in all 50 states. It is based...