Ok so just checked... all gu sales in all ststes by dealers (this appesrs to inckude gun shows) require record keeping.
Private sales only requires record keeping in 19 states, though these are demcrat states mostly so thry do represent thr overwhelming majority of the usa population.
I woukd be ok with supporting a federal law that extended the record keeping requirements on gun sales as they currently exist toninckude all private sales.