Whoever they want. They just have to suspect you of harboring enemies of the State. Find someone whose name is in Epstein's little black book, and you'll be safe, though.
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. Amendment IV