Comment by shadowprofile76

The fourth amendment gives you that right (despite it having been badly mutilated by all sorts of supposedly valid or forced exceptions (ie: border areas). You're supposed to be secure in your possessions and property. The legal breakdown is here, https://www.uscourts.gov/about-federal-courts/educational-re... and definitely doesn't allow cops to arbitrarily rifle through your car looking for evidence of suspicious things. They are supposed to have prior and clear cause for probable illegal activity (note that being suspected of having cash is not an illegal actiity), though probable cause can be stretched to include a lot of things by a sympathetic judge and corrupt cops.