DUI ruling: Marijuana presence not proof of impairment

PHOENIX — People with marijuana in their system can escape driving-under-the-influence convictions if they can show they weren’t “high” enough to be impaired, the Arizona Supreme Court ruled Friday.

The justices rejected a claim by two individuals that the fact they had state-issued cards allowing them to ingest the drug automatically means they can never be charged with driving while impaired. Chief Justice Scott Bales, writing for the unanimous court, said nothing in the 2010 voter-approved law…