Atlanta Federal Reserve bank president Dennis Lockhart said on Wednesday that the United States remains on track for a likely interest rate hike in the June to September period, with a weak first quarter likely to give way to stronger growth. I still believe the factors are transitory,” Lockhart told reporters at a monetary policy conference here. Fed policymakers and many analysts cut their U.S. growth projections after a first-quarter slowdown that stemmed in part from the hit U.S. energy companies are taking from low oil prices, and the hit exporters are taking from a strong dollar.