This week marks the fifth anniversary of Colorado's legalization of the commercial marijuana trade, and the reviews aren't good. An editorial in the Colorado Springs Gazette reports, "Five years of retail pot coincide with five years of a homelessness growth rate that ranks among the highest rates in the country. Directors of homeless shelters, and people who live on the streets, tell us homeless substance abusers migrate here for easy access to pot." The paper says, "Five years of Big Marijuana ushered in a doubling in the number of drivers involved in fatal crashes who tested positive for marijuana, based...