The CDC already did a study.
Obama or Bush authorized it.
The results were published & confirmed what everyone knew.
Obama created a Gun Violence Task Force, and put Biden in charge of it. Approving the CDC to do stats gathering nationally was in the list of executive orders Biden's Task Force recommended, but I don't see where that was ever implemented.
The other study was on the effectiveness of banning Assault Weapons. In that report, many facts were included in the discussion, including the fact that defensive use of firearms massively outnumbers the number of people killed with guns, as well as those injured with guns.
The real issue is that the 2nd Amendment was created in part to allow the populace to protect ourselves from a government that infringes on protected rights. Now that same government will be using our tax dollars to study and implement gun control -- something that directly benefits a government that's infringing on individual liberties.
These studies will never be used to make gun ownership easier or safer. It'll only be used to inhibit ownership, because the underlying premise of the CDC will always be "Guns Bad."