Actually, they all were.Yeah, all that fast-tracking vaccines to get them out as soon as possible, shutting down travel from highly infected areas (oh, wait, we didn't do that one, there was a political party dead set against doing anything like that), accepting and following CDC mask and distancing dictates. Big time publicity stunts.
Most of the research on Covid Vaccines were done in other countries.
Trump's travel ban actually made things worse, because while it kept out uninfected Chinese, it brought in a shitload of infected Americans who were released back into he country without a quarantine. Trump's priority was getting Americans back and off cruise ships, instead of keeping them out of the general pool.
Trump also fought against masks and social distancing at every step, because it made him look weak.