Are industries with tariff subsidies competitive at international price points? Given domestic subsidy, will they be efficient enough to compete in international markets?
How do non- free-trade, non- fair-trade agreements affect other trade agreements?
Trade Protectionism: https://en.wikipedia.org/wiki/Protectionism
"Can’t build a decent car, can’t make a TV set or a VCR worth a f, got no steel industry left, can’t educate our young people, can’t get health care to our old people, but we can [... war euphemism]" -- George Carlin (1992)
Have subsidies saved comparably inefficient [domestic manufacturing] markets, or have trade protectionist subsidies resulted in net unintended consequences when the externalities of "all you peoples' special deals" are accounted for?
Are information services and financial services a viable strategy for long-term growth in GDP?
There's a saying: "Only Nixon could go to China", from the fact that only a president renowned for vehement anti-communism could open relations with communist China. The Democrats, at least since Bill Clinton's administration, have been very pro-free trade, after 2016 the Republicans were ready to do this sort of thing, but the Democrats were still pro-globalization. It's because the Democrats were the second party to swing against the idea that all trade is good no matter what the country or industry, that they were able to get stuff passed better.
It should also be said that covid closing of borders, post-covid supply chain problems, and Russia's invasion of Ukraine all swayed opinions as well.