The U.S. economic expansion will most likely end in 2020, according to a survey of economists by the Wall Street Journal, released on Thursday. Just under 60% of economists think the expansion will end in 2020 with 22% selecting 2021. Federal Reserve actions will be the cause of the economic downturn, according to the economists, with 62% saying the recession would ensue after the central bank raises interest rates to cool off an overheating economy.