President Donald Trump is hitting foreign steel and aluminum with a 25% tax. If that sounds familiar, it's because he did pretty much the same thing during his first term.

Trump's original metals tariffs gave America's struggling steel and aluminum producers some relief from intense global competition, allowing them to charge higher prices. In anticipation of the new tariffs, shares of steel and aluminum producers climbed Monday. Nucor rose 5.6%, Cleveland-Cliffs jumped 17.9% and Alcoa ticked up 2.2%.