Tennessee Representative John Crawford Wants Law Enforcement To Collect DNA From Anyone Arrested For A Felony. His Proposed Bill Would Require A Biological Sample To Be Taken Before Release From Custody Starting July First. The Tennessee Bureau Of Investigation Would Analyze And Store The DNA, Which Crawford Says Will Help Solve Cold Cases And Prevent Future Crimes. If Charges Are Dropped Or A Defendant Is Acquitted, The Tbi Would Be Required To Destroy The Sample And Records, As Long As There Are No Other Pending Charges.