You can be jailed for no crime? Sorry, not in America, not legally.
Ever heard of a Miranda Warning? You MUST be told what crime you are being charged with.
You are in SERIOUS need of remedial education. Wow. I can’t believe you really said that. Astounding.
There was a country that comes to mind, though, where you DID have to do everything the officer said though, or get shot or imprisoned...let’s see...it was quite a few decades ago and I think it starts with a “G”.
Actually they can, in America. But if they keep you for more than 24 hours, they have to charge you with something.
But you can be arrested, if the officer sees probable cause, but not be charged.