Local city police cannot come into your home without a warrant . The feds DEA,FBI can come into your house without a warrant . Under the patriot act the feds can break into your house too snoop around , make it look like a burglary and not notify you. Keep in mind they can confiscate your computer,And not tell you , plant a bug in your house, or phone under the guise of the patriot act. Something we all should be very concerned about.