The GOP (Guns Over People Party, a fully owned subsidiary of the NRA/GOA) refuses to enact Universal Background Checks despite 90% public support.

https://www.huffpost.com/entry/chris-murphy-background-checks_n_63ee9cc9e4b0808b91c5c621

Expanding Gun Background Checks Is Hugely Popular. Republicans Don't Care.

A bill requiring criminal background checks for all gun sales has no Republican support in the Senate. Some Democrats oppose it, too.

HuffPost