(Hillsboro, OR) -- Nearly two-dozen people are facing charges following a sex offender compliance mission in Washington County. Police say they arrested 21 people. The Sheriff's Office worked with U.S. Marshals and Oregon State Police to check the status of 189 sex offenders. Ten people weren't living at their reported address, 24 sex offenders were out of compliance and 21 people were arrested. Three other cases remain open investigations.