The author of the world and US bioweapons legislation, Professor Francis Boyle, himself has looked at all of the public documents on this and stated that this work constitutes Gain of function.
Never heard of him, but have now:
https://www.businesstoday.in/latest/world/story/francis-boyle-ali-khamenei-meet-the-superspreaders-behind-top-covid-19-conspiracy-theories-287648-2021-02-15
Francis Boyle
Who he is: A Harvard trained law professor at the University of Illinois, Boyle drafted a 1989 law banning biological weapons and has advised the nation of Bosnia and Herzegovina and the Palestinian Authority.
Boyle has no academic degree in virology or biology but is a longstanding critic of research on pathogens. He has claimed Israeli intelligence was involved in the 1993 World Trade Center bombing; that SARS, the swine flu and Ebola have been genetically modified; and that West Nile virus and Lyme disease escaped from a U.S. biowarfare lab. He has also claimed that Microsoft founder Bill Gates "was involved" in the spread of Zika.
You always find the quality sources.
RE: US Institute of Health Admits to Funding Gain of Function Research in Wuhan, China.