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Do you actually own anything digital?
(www.theregister.com)
This is a most excellent place for technology news and articles.
You clearly don't know about the state of seizure laws in the US over the last years. Having cash is reason enough for them to seize it and they don't have to suspect you of a crime. They can simply find the cash as suspicious and take it and you have to prove the legality of your cash or property at your own cost/expense to get it back.
You clearly don't understand the status of civil forfeiture in my state, but it's cool, we only changed it 23 years ago...
https://www.osbar.org/publications/bulletin/06nov/forfeiture.html
You said the Fourth Amendment, not your state law. The fourth amendment should protect from this but historically it hasn't. One good state doesn't change that.