More modern day slavery has been uncovered in New Zealand, with the revelation that foreign welders are being paid $3 an hour and it’s legal. Immigration reviews its "specific purpose" visas after foreign welders work long hours for 9 months on $3 an hour. https://t.co/yc9HaPRR9q — Michael Morrah (@MichaelMorrah) December 21, 2016 Newshub can reveal…