We can't, because we don't want to. Its theoretically possible for the USA to ramp up to be the biggest producer in world, but not quickly. Drones have many parts that aren't produced in the USA at all, so all of those lines would have to be developed from effectively nothing. This is not a fast process. Like that old saying, if you think you might need the wood in the future, you plant the seeds now.
We can't, because we don't want to. Its theoretically possible for the USA to ramp up to be the biggest producer in world, but not quickly. Drones have many parts that aren't produced in the USA at all, so all of those lines would have to be developed from effectively nothing. This is not a fast process. Like that old saying, if you think you might need the wood in the future, you plant the seeds now.