It is important to note that US foreign policy undoubtedly exerts the strongest influence globally and impacts both Americans and foreign nations. If I were the president of the US, I would reverse the current trajectory of policies of hostility and focus on the strengthening of the US itself and its closest allies. Three actors I would approach are the European Union, Mexico, and Brazil.
As a president, I would reverse the neoconservative approach towards neoliberalism, which led to a series of failed policies. Examples include the current War in Ukraine, the Middle East, and Afghanistan. I think the US foreign policy overextended itself by trying to democratize the world, which led to the emergence of low-quality democracies or dictatorial regimes. I believe the most advantageous and practical school of thought is realism (Orsi et al., 2018). The US tried to become a global hegemon, which led to globalization. It backfired on the US by making China a peer competitor and drawing Russia under Chinese influence. After WW2, the US emerged victorious because it built up its allies, such as Europe. Nations were naturally attracted to the US because it was successful. This needs to be re-established again by returning manufacturing from China to the US, building up Mexico and Brazil, and making EU energy dependent on the US only.
In conclusion, Brazil is key for South America, whereas the EU and Mexico are time-tested allies. Globalization made the US and all of its allies more vulnerable and dependent on untrustworthy partners and adversaries. The US and its allies have the resources they need to prosper and be better than other regimes. Once again, the US should expand its influence by luring and attracting others with its success rather than sheer military might.
Reference
Davide, O., Avgustin, J. R., & Nurnis, M. (2018). Realism in practice: An appraisal. E-International Relations.