[colejohnson66]

No they actually can’t in most cases. Without probable cause or permission, an officer is not allowed to execute a search. The dog is used to provide probable cause.

Also, it’s the same with letting an officer into your dwelling: Without a warrant, probable cause, or permission, they cannot legally enter.

[astura]

No, while crossing the boarder you can be searched without a warrant, permission, or probable cause

[jacquesm]

Also at the border? I thought customs had a full right to inspect whatever they want there.