In 2018, there were more than 26 million background checks conducted and fewer than 100,000 people failed. Of those, the vast majority were for a criminal conviction. Just over 6,000 were rejected for a mental health issue.

The money could go to funding FBI domestic terrorism investigations, Department of Homeland Security initiatives to counter violent extremism, and federal health agency research on gun violence according to sources.

A divided Senate rejected rival plans to bolster the federal background check system and moved toward blocking other proposed curbs on guns Monday.