USL vs. MLS

I always assumed The United Soccer League was North America's 2nd tier of football or just the neglected stepchild (step parent?) of Major League Soccer. However, the more I learn of each league's inner workings and the fact that there is actually no relationship between the two leagues, the more I favor USL as a more proper model for North American football.

David J. Warner wrote an excellent open letter to St. Louis that illustrates USL vs MLS.
READ IT HERE