Arizona has refused the federal government's demand to take down double-stacked shipping containers it placed to fill gaps in the wall along the U.S.-Mexico border, saying it won't do so until the U.S. moves to construct a permanent barrier instead. The Arizona Department of Emergency and Military Affairs dug in its heels in an Oct. 18 letter to the U.S. Bureau of Reclamation, saying “the containers will remain in place until specific details regarding construction are provided.” A regional spokeswoman for the Bureau of Reclamation did not immediately respond to a request for comment on Arizona’s refusal in the most recent flap between the Biden administration and Republican-led border states over immigration policies.