ORS 162.455: Interfering with legislative operations.

Any person not a member of the Legislative Assembly who engages in conduct in or near the legislative chambers of either house or in or near any meeting of a joint, standing, interim or special committee of either house, wherever held, with the intention of interrupting, disrupting or otherwise interfering with the orderly conduct of business therein, or who gains or seeks to gain access to the chambers or meeting in such manner shall be guilty of a misdemeanor.