Law enforcement may have another tool to use against persistent drunk drivers after a measure known as Amelia’s Law passed its final hurdle last week.The bill, which now awaits only the signature of Gov. Bill Haslem, would keep tabs on known alcohol and drug abusers through a special instrument called a transdermal monitor that detects drugs and alcohol in their system. Parolees could be required to wear the monitor as part of their release from prison.Detection of drugs and alcohol could lead to the revocation of their freedom.