Topic involves lab efforts to enhance animal viruses  to more severely attack humans.  This lab technique is called "gain-of-function" where the viruses are injected with proteins, etc. to become more dangerous.   The US admits its being done in some labs here, but the dispute comes up about an American research Dr. collaborating with a Chinese Dr, a leading researcher at the Wuhan lab.  Also whether that Wuhan lab or that Chinese Dr is getting US funding  -- or had, in the past, & signed off on by Fauci.

Click Here   "Rand Paul Confronts Fauci On Funding Gain-of-Function Research at Wuhan Lab"

Click Here      "Tucker Carlson: . . . Fauci exploited a loophole that allowed him to fund research at the Wuhan Lab that likely became COVID-19"

Here's video of Rand Paul exchange with Fauci today.  Listen for yourself, to the 7 min version,  as the media will no doubt minimize Rand Paul's assertions.