At the national level, 2.5% is the lowest the unemployment rate has ever been … and that was for just two months in 1953. We’re at 4% right now, but the labor market is pretty tight. In this episode, we ask: How low can unemployment go? Plus, Samsung buys back stock and retires shares, the Fed is thinking about tariffs and a program that teaches refugees to drive runs out of gas, thanks to President Trump’s immigration policy.