While some Maine industries continue to struggle to fill their open jobs, others are thriving by actively recruiting and supporting our newest Mainers — immigrants from around the world — as their skilled employees. Maine should expand training and welcoming programs for these immigrants to help facilitate their integration into our economic and social communities. According to Pine Tree Watch, Ben Waxman and Whitney Reynolds, owners of clothing-manufacturing company American Roots in Westbrook, faced the same problem troubling many Maine business — they couldn’t find enough workers who were skilled in their trade.