(Bloomberg) -- Tariffs unexpectedly devaluing the US dollar — and in turn boosting corporate earnings — was one of the few bright spots of the first-quarter earnings season in North America. Most Read from BloombergAmerica, ‘Nation of Porches’NJ Transit Train Engineers Strike, Disrupting Travel to NYCNJ Transit Makes Deal With Engineers, Ending Three-Day StrikeContrary to what analysts and executives had expected at the beginning of the year, a Bloomberg gauge of the dollar has collapsed in rece