"But, riddle me this - were Bernie Sanders, Schumer, and Pelosi stupid when they called for tariffs in the past or are they stupid now for opposing them? Only thing certain is that they are stupid - I just want your reason as to why."
I'm very curious as well.
For decades, limits on free trade and expansive tariffs were the purview of the far-left. Those who were not so far left as to consider themselves socialist, but still wanted the government to create protected economic classes. As I've said several times, Trump reminds me most of Dennis Kucinich and Huey Long, both populist democrats considered to be pretty far left.
Now it's Trumps "Republicans" who are supporting those same things. It's almost as if the Dems snuck in a surrogate Bernie Sanders...and republicans are LOVING it. And Democrats can't stand it.
"So... What is their purpose, then?"
Bring manufacturing back to the US. Provide higher paying jobs for lower skilled workers. Protect the United State's strategic industrial interests.
Trump is a populist. If you're living paycheck to paycheck, the $5 trillion dollar loss in the stock market over the last few days didn't cost you anything.
Furthermore, Trump is entertaining taxes on the rich to reduce the burden on lower income earners. how can you not like that?