No it isn't. Just because Sessions has to approves of something doesn't make it correct. You think I have some kind of partisan loyalty over ideology or something? Boy are you mistaken.
Yes...ii, iii, c are a violation of the 4th Amendment. There needs to be a specific accusation of a crime (so far I've yet to hear of any actual crime stipulated to even begin the investigation) and then warrants need to be provided for that specific crime, searching for specific things related to that specific crime. The 4th Amendment isn't difficult to understand so really the only thing laughable is your inability to read plain English for comprehension.
Amendment IV
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.
So specifically they actually cannot just start tacking on any crime they come across. This is my last response to someone who cannot, will not, understand such very simple concepts.