Commentary Williamson County? Never heard of it. What’s the big deal? Well, a lot. Williamson County, Tennessee is what you might call “Republican Heaven.” Just south of Democrat-stronghold Nashville, much of it is a gorgeous suburb, home to the likes of country star Luke Bryan of “American Idol” fame—on an 150 acre estate—and Senator Marsha Blackburn. Its county seat, Franklin, has a downtown straight out of an updated version of Norman Rockwell, the kind of place you can get both great barbecue and haute cuisine. That small city and county are growing like crazy in large part because they are also supposed to have one of the best public school systems in the country. Supposed to… ‘Moms for Liberty’ I had lunch the other day with two Williamson women who have just formed that county’s branch of a new movement for parental rights (mostly focused on schools) called “Moms for …