Expedited removal is part of their existing authority to deal with fraud and misrepresentation with visa entry requirements.
It only requires a few hours to process and results in a five year ban from the United States as a deterrent. Detaining someone indefinitely under these specific circumstances is not something that happens in France and Germany. And until now wasn’t something that was happening in the United States.
https://immigrationforum.org/wp-content/uploads/2019/06/Fact...