As their children cooed from wheelchairs and rocked softly in their arms, the marijuana migrants of Colorado clasped hands, bowed their heads and said a prayer of cautious thanks. They thanked God for the dinner of roast turkey and mashed potatoes, for their children and for the marijuana-based serum that has drawn 100 families to Colorado on a desperate pilgrimage to quell the squalls of seizures inside their childrenamp;rsquo;s heads. They have come from Florida and Virginia, South Carolina and New York, lining up to treat their children with a promising but largely untested oil that is considered legal medicine in this cannabis friendly state. Their migration is one of myriad ways that a once illicit drug is reshaping life here in Colorado, which now stands at the forefront of the national debate over legalizing drugs. While these families are seeking treatment through a medical marijuana system that has existed for years, they are arriving at a time when the drug is becoming a mainstream part of public life, made legal for recreational use in a historic vote last year. The new arrivals call themselves marijuana refugees. Many have left jobs and family members behind in states where marijuana remains outlawed, or cannot be used to treat children. While some have moved their entire families, others are splintered, paying rent and raising children in two states. During the holidays, they join family gatherings through video chats and swap iPhone pictures of Christmas trees. - wn