Did anti-Trump bias blind science to evidence for COVID lab-leak theory?

A growing number of scientists are signaling what could turn out to be a scandal among the U.S. scientific community: That many scientists last year opposed the COVID-19 "lab-leak" origin theory simply because then-President Donald Trump had spoken favorably of it. 

The lab-leak hypothesis postulates that the SARS-Cov-2 virus may have escaped from a Chinese coronavirus lab located just a few miles from the first known outbreak of COVID-19. The suspicion was largely ignored or dismissed as a conspiracy theory by much of the press and scientific community over the past year. 

The lab-leak theory has gained mainstream credibility — including among major politicians — only over the past few months. Last month, an international team of nearly twenty scientists released a public letter in the journal Science stating that the lab-leak theory was a "viable" hypothesis and calling for a "transparent, objective, data-driven" investigation.

In recent weeks, several public health experts and officials have suggested that part of the reluctance of scientists to call for investigations into the hypothesis may have been because Trump was a proponent of the theory at the outset of the pandemic last year. 

In a major report on the lab-leak theory in Vanity Fair this month, Miles Yu — a China strategist with the State Department — said that the international scientific community responded with "maddening silence" after Trump's early endorsement of the theory. "Anyone who dares speak out would be ostracized," he claimed.

Former Deputy National Security Adviser Matthew Pottinger told Vanity Fair that a similar "antibody response” flowed through the U.S. government itself, with government workers fearing that the theory could be seen as "destructive nativist posturing," as the magazine put it. 

In early 2020, the lab-leak hypothesis "got jumbled up together with some of the more crazy aspects of Trump," J. Stephen Morrison, director of the Global Health Policy Center at the Center for Strategic and International Studies, told NPR last month. "And scientists recoiled against that and went in favor of the theory that COVID-19 had emerged out of a natural process versus a lab escape."

Akiko Iwasaki, an immunologist at Yale University, told the New York Times last monththat "in the beginning, there was a lot of pressure against speaking up, because it was tied to conspiracies and Trump supporters."

Alina Chan, a geneticist at MIT, told NPR that Trump's endorsement of the theory tainted scientific inquiry into the matter. Chan herself claimed to have been "compared to insurrectionists and Qanon" for bringing it up.

"Preferred values tend to determine perceived facts"

Despite widespread perceptions that scientific inquiry is free from any taint of political bias, political and ideological values all too frequently seep into the way scientists frame scientific questions, according to University of Massachusetts political science professor Morgan Marietta.