(Portland, OR) -- Oregon National Guard troops were briefly sent to Portland earlier this month. A trial is underway in federal court to determine whether troops could be deployed. Judge Karin Immergut issued an order on October 4th stopping troops from being deployed. On October 5th, nine soldiers worked one shift at the ICE building. That's the same day Immergut issued a ruling banning all troop deployments. She said they'll discuss later whether the use of troops was contempt of court. The trial could last through Friday.