Reagan was right about tearing down the wall.
Bush 1 was right about raising taxes, freeing Kuwait and stopping.
Bush 2 was right about Medicare part D, except for not funding it or showing negotiation. IIRC his immigration policy ideas would be considered pretty liberal today.
Trump is a fucking moron, but I do think him pushing for more trade protection against China has been a net good. Also Operation warp speed.
Trump probably had less to do with Operation Warp Speed and probably just agreed to it because his cabinet pressed for it.
As for trade protection. I think that can be good, but it has to be done in an intelligent fashion. Trump is an utter fucking moron, and doesn't know what the hell he's doing. These tariffs and trade embargos which Trump started, which are exacerbated by Biden, has gotten to the point it is pissing off our allies.
For example, while I have no issue with the 25% tariffs on Chines made automobiles, a 100% tariff is just protectionism for our domestic automobile manufacturers. The 25% tariff blunts any government subsidies that the Chinese government gives to the Chinese automobile manufacturers. And make no mistake, the Chinese politburo is pushing for more EV's, both as a new industry to try to dominate and to counter environmental issues with ICE vehicles. These tariffs brings up the cost enough to level the playing field for domestic companies, though it also helps foreign manufacturers such as Toyota, Honda, Kia, etc, that are exempt from these tariffs. However, a 100% tariff is merely protectionism. And quite frankly, it's at the point where it hurts American consumers. Look at how insane new car costs are today. Current automobile manufacturers have almost no incentive to make a sub $25k car nowadays. Everything starts at $35k and up, and those are just one step up from the basic beaters. Every car with desirable features seem to be $40k and up.
Another example is computer chip embargos. The US has been keeping the latest manufacturing processes out of China's hands for decades. We keep them about two to three generations back. Enough that we have the latest advancements, but not so far back that China feels the urgent need to invest in its own domestic chip manufacturers, of which there were a few. These domestic Chinese manufacturers were able to produce machines that can produce chips, but at much less advanced nodes. Before the latest chip embargos, China was about 2 generations behind the US. These embaros would push China behind the US by about 4 generations. Trump, and especially Biden, has tightened the noose so much that the Chinese politburo has heavily pushed for increasing domestic chip manufacturing capabilities. Will it happen overnight? Of course not. But it is happening. I actually think that it is possible China may be back to being about two generations behind the US again in as little as about 15-20 years. But this time, without the need to purchase lithography machinery from companies like ASML. And that's an overall negative for us. We would lose most of the control over China on that front, and it's one less tool we have to combat China.