Coronavirus disease 2019 (COVID-19) originated eight miles from China's only known top level biolab, the Wuhan Institute of Virology. Thus, this is not a natural occurrence. The virus leaked from that lab accidentally, or it was released into the seafood market intentionally by any person with the capability to do so.

The disease does not leave antibodies, thus if someone has antibodies, they have already received a vaccine for it, despite there being no known vaccine.

Every U.S. presidential candidate should allow themselves to be tested for antibodies for this virus by a neutral third party to prove their innocence.

List here: https://en.wikipedia.org/wiki/2020_United_States_presidential_election#Nominations

There are other great candidates for testing as well, but let's start with these people.