Biden stretched too far on that front and faced pushback from trade partners like Canada and from within his own party, so those measures were dropped. That wasn’t the end of his protectionist measures though, Biden doesn’t believe in free and fair trade with his neighbours, he believes in screwing us over..A few months after the federal and provincial governments announced the Stellantis deal, the Biden administration announced their oddly named Inflation Reduction Act.
Purists might argue that there should be no subsidies and both the political left and political right have campaigned against corporate welfare, which this certainly is. The country and the economy aren’t run by purists though and those making decisions must deal with that reality. The Trudeau government had the option to offer similar bribes or lose out on the kind of investment that only comes along every few decades if not longer.