And expecting different results is defined as insanity.
If I remember correctly President Bush attempted to play around with tariffs back in 2002.
A lot more jobs were lost than saved.
Lamar Alexander, the Republican Senator from Tennessee, recently told the President that there were more than 10 times as many workers in steel-using industries than in steel-producing ones and that during President Bush's experiment with tariffs the steel using industries in the US lost more jobs than exists in steel producing industries.
President Trump is not a very good historian.
( I can't get TxMusky's topics to open to respond there)