2, 3 and 4 are not illegal or probable cause for arrest. Refusing a search (5) is not even probable cause for arrest.
1 is likely probable cause for arrest, sure. Admitting to having marijuana in the vehicle (5) gives them probable cause to search the vehicle. But probable cause to search the individual's travel history over the last month? No, that requires a warrant.
1 is likely probable cause for arrest, sure. Admitting to having marijuana in the vehicle (5) gives them probable cause to search the vehicle. But probable cause to search the individual's travel history over the last month? No, that requires a warrant.