The crux of the matter is "policy" vs "law."
For example, the DOJ has a "policy" called the "60-day rule," which discourages taking overt law enforcement actions against a politician, such as indictments or arrests, within 60 days before a federal election, in order to appear impartial.
The Trumpf junta wants favorable policies in place to protect him, circumnavigating Congress.
Had the DOJ not had its long-standing "policies" about investigating politicians or POTUSes, no Special Counsels would ever be required-- just a standard AUSA would suffice seeking an indictment against a defendant.
No law prevented an investigation of a sitting POTUS by an AUSA and a Grand Jury, a policy did.
SC Robert Mueller and Jack Smith were both hamstrung with DOJ policies that narrowed the bandwidth of their investigations into Dummkopf Trumpf.
Go Islam?