"People" in the 5th Amendment means "people", not citizens; 5th Amendment protections are not limited to citizens.
But note that it has no explicit warrant requirement; just a reasonableness requirement and a limit on when warrants shall issue. It's read as implicitly requiring warrants in most cases for reasonableness, but there are plenty of exceptions.
But note that it has no explicit warrant requirement; just a reasonableness requirement and a limit on when warrants shall issue. It's read as implicitly requiring warrants in most cases for reasonableness, but there are plenty of exceptions.