Unfortunately, I'm 99% sure Trump gave the pharmaceutical companies blanket liability waivers for the vaccine:

"President Donald Trump reportedly wants to fast-track approval of an experimental coronavirus vaccine being developed in the UK so it can be used in the US before the presidential election.

In a bid to secure a coronavirus vaccine before November 3, Trump wants the US Food and Drug Administration to grant emergency use authorization to the vaccine being developed by Oxford University in the weeks leading up to the election, even if it does not yet have full regulatory approval, the Financial Times reports, citing unnamed sources."

"Dr. Anthony Fauci, the director of the US National Institute of Allergy and Infectious Diseases, has urged caution about Oxford's front-running status, however, reflecting the fact that most vaccines fail to receive regulatory approval.

"You've got to be careful if you're temporarily leading the way versus having a vaccine that's actually going to work," he told the BBC last month in comments reported by Bloomberg.

Fauci, the top US infectious-disease expert, also warned about the danger of fast-tracking a coronavirus vaccine after Russian President Vladimir Putin this month announced that Russia had approved a vaccine and hoped to begin mass production soon. Russia's vaccine has not completed its phase 3 trials, which are considered key in demonstrating the safety and efficacy of a vaccine and are usually completed before regulatory approval is given.

Fauci said while the US had numerous vaccines in development, "if we wanted to take the chance of hurting a lot of people or giving them something that doesn't work, we could start doing this, you know, next week if we wanted to — but that's not the way it works.""