VAIL Since the passing of Amendment 64 in 2012, allowing the retail sale of marijuana in Colorado, Vail Resorts has noticed some obvious effects. Long before pot sales were allowed to begin on Jan. 1, Vail Mountain employees noticed a rash of people openly lighting up on the slopes including on the chairlifts and on the decks of restaurants. When employees approached smokers to stop, (as it is still illegal to publicly consume marijuana or possess it on U.S. Forest Service land), they were often met with less-than-polite responses and the insistence that marijuana was now legal. It …