In a turnaround, the agency is expected to grant the request before the winter holiday season, giving access to all 181 million fully vaccinated people.
The panel has summoned Stephen Miller, a senior adviser to President Donald J. Trump, and several other top White House officials who witnessed his actions before and during the riot.
Mr. Trump’s son-in-law and his chief of staff are among those accused of violating a law designed to prevent federal employees from abusing their power.
Moderna’s patent application names several employees as the sole inventors of a crucial component of its coronavirus vaccine, excluding three government scientists.
An advisory panel to the Food and Drug Administration voted against a similar request from Pfizer in mid-September, but the agency is considered likely to grant the request, perhaps before Thanksgiving.
National Republicans had been trying to recruit Gov. Chris Sununu to compete for a Democratic-held seat that the G.O.P. believed could determine control of the Senate.