This would most likely be based on public opinion surveys. The 4473s and NICs checks are deliberately hamstrung. The ATF is not allowed to digitize these recor

This would most likely be based on public opinion surveys. The 4473s and NICs checks are deliberately hamstrung. The ATF is not allowed to digitize these records, so they have to use paper and microfilm archives. https://www.thetrace.org/2016/08/atf-non-searchable-databases/ https://www.thetrace.org/2016/08/atf-non-searchable-database... https://www.thetrace.org/2016/08/atf-non-searchable-databases/ https://www.thetrace.org/2016/08/atf-non-searchable-database... https://www.npr.org/2013/01/08/168889491/gun-control-advocates-say-atfs-hands-have-been-tied https://www.npr.org/2013/01/08/168889491/gun-control-advocat...