Immigrant communities in Kern County, California, are on edge as the U.S. Border Patrol has been seen conducting enforcement operations throughout the region this week.

“Our area of responsibility stretches from the U.S./Mexico Border, north, as mission and threat dictate, all the way to the Oregon line,” U.S. Border Patrol Chief Patrol Agent Gregory K. Bovino, chief of the El Centro Sector in Imperial Valley, said in a statement.