In order to protect the right to bear arms and keep the country safe, background checks are necessary to monitor citizens usage of guns. These background checks should look at criminal records, medical history, drug tests, and credit history.
Criminal Records including: History since the age of 14, convictions, violations, etc.
Medical History: Ailments, medication taken, mental disabilities, etc.
Drug Tests: Result history, substance use, etc.
Credit History: purchases in the last year, credit score, etc.