President Trump said again Sunday that he will only take a wall along the U.S.-Mexico border — though he admitted that the use of drones is “lots of fun.”

“The only way to stop drugs, gangs, human trafficking, criminal elements and much else from coming into our Country is with a Wall or Barrier. Drones and all of the rest are wonderful and lots of fun, but it is only a good old fashioned Wall that works!” Trump said in a morning tweet.