DENVER (AP) -- A recent ruling by the U.S. Supreme Court could change Colorado's debate over marijuana driving limits.
A bill up for a hearing Monday in the state Senate is the fourth attempt by lawmakers to set a blood standard for determining pot impairment. A Supreme Court ruling said officers can't take blood without a warrant in some cases.
Because there's no breath test for marijuana impairment, pot activists hope the ruling inspires lawmakers to abandon the idea of a pot analogy for drunk-driving standards.
Supporters of the bill insist they'll press on. Colorado drivers consent to fluid sampling by police when they get licenses, though they can decline and give up their licenses for a year.