The details remain murky, and US officials have admitted to no wrongdoing. But accusations that the US funded so-called “gain-of-function research” – or altering the genetic make-up of pathogens to enhance their virulence or infectiousness – have yet to be definitively quelled. On the contrary, according to a Vanity Fair investigation, “In one State Department meeting, officials seeking to demand transparency from the Chinese government… were explicitly told by colleagues not to explore the Wuhan Institute of Virology’s gain-of-function research, because it would bring unwelcome attention to US government funding of it.” Even as circumstances conspire to keep the truth hidden, one question will not go away: Could it have been a coincidence that the globally disruptive pandemic originated in the same city where China is researching ways to increase the transmissivity of bat coronaviruses to human cells? As CIA Director William Burns has acknowledged, we may never know for sure. But we should have no illusions about what that means. In failing to conduct a proper investigation when the pandemic began, we may well have let the CPC get away with millions of deaths.