(Bloomberg) -- A long-awaited import tax on purchases up to $50 will offer short-term relief to Brazil’s battered retailers as they stumble over longer-term hurdles.Most Read from BloombergSouthwest Plane Plunged Within 400 Feet of Ocean Near HawaiiFlesh-Eating Bacteria That Can Kill in Two Days Spreads in JapanWells Fargo Fires Over a Dozen for ‘Simulation of Keyboard Activity’Yes, Everyone Really Is Sick a Lot More Often After CovidBeaches on Singapore’s Sentosa Island Hit By Oil SpillThe bill