Legislature; prohibiting consumption and possession of alcohol by members of the Legislature while performing official legislative duties. Emergency.

SB 1640 prohibits Oklahoma legislators from consuming, possessing, or being under the influence of alcohol while performing official duties, including in the State Capitol Building. It requires breathalyzer testing for suspected violations, with penalties escalating from a $500-$1,000 fine for a first offense to permanent expulsion for a third violation within 24 months. The bill mandates chambers to adopt enforcement rules, requires ethics committee referrals, and allows court removal proceedings for confirmed violations. This directly affects all state legislators during legislative sessions, committee meetings, or Capitol-based official activities.