By JOSHUA BENDER
Capital News Service
LANSING — The number of foreign seasonal farm workers pouring into Michigan and the legal and economic challenges they face are rapidly growing, say some legal and agricultural experts. The increase is the result of contractors bringing workers into the country under temporary visas called H2A visas. They are often referred to euphemistically as guest workers, said Tom Thornburg, co-managing attorney at Farmworker Legal Services, a Kalamazoo-based legal advocacy group for agricultural workers. The number of these guest workers from other countries has doubled every year since 2012, he said. In 2015 they numbered 928.