== NPOV == 

 I am miffed.  The head of this article says the Fourth Amendment 'guards against unreasonable searches and seizures when the searched party has a "reasonable expectation of privacy".' 
 In fact, the amendment says absolutely nothing about expectation of privacy.  Those words come from a Supreme Court opinion.  That ruling belongs in a sub-section, with a link to the ruling.  I removed the misleading text and replaced it with what the amendment actually says.  SOMEONE REVERTED IT. 

 The text as it stands is not correct.  This is a POV issue, and a hot one.  There is a great debate getting under way in the US as to whether the Supreme Court is the sole arbiter of constitutionality.  Wikipedia should not take sides.