<sod >âUnions understand that workers have always done best when the labour supply is controlled and communities are stable,â Mr McCluskey said.< eod>< sod > "Unions understand that workers have always done best when the labour supply is controlled and communities are stable. While we must reject any form of racism, and help refugees fleeing war, we must also listen to the concerns of working people," he wroteÂ in an article for the Huffington Post website.< eod>