We were told Hillbag was totally legit, too.
"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."
If the FBI did not have a criminal warrant to put CI's, also government contractors, within the Trump sphere before July 2016 for observation and/or entrapment, then it is not perfectly legal, no matter whatever whoever says.