Lawmakers are being asked to create an independent youth impact commission that would provide state leaders with the perspective of 15- to 30-year-old Mainers on what state policies would keep them in Maine. For years, state leaders have grappled with how to convince young Mainers to stay in the state and not be part of the brain drain of young people leaving the state after college or high school. Thea Sweet, 23, of Hallowell told members of the Legislature’s Innovation, Development, Economic Advancement and Business Committee that the perspective of youth is needed to craft the policies that would keep them working in Maine.