"The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."

That says nothing about being american, or a citizen, or the distance between the people involved. It just says something that should be common sense - people have a right to be protected against unnecessary search and seizure.