No one claims they are- except silly people who want to argue against such a silly claim.
Straw men arguments are sure big with supporters of this raid.
In the judge's ruling he says the House :
" contends that even a review of the documents by the Court to determine privilege is unconstitutional. See Amicus Brief 29."
But, they didn't "contend" that:
"... Member to be present at the search and to be permitted to remove Speech or Debate pricileged materials prior to the search (subject , of course, to later judicial review as now occurs in the sdubpoena context)."
The Branches are not equal under the Constitution.
For example only one is protected by the Speech or Debate clause.
I am not a "big" supporter of the raid. I do however believe it was legally proper based on the facts as I know them.
And, in my layman's opinion, our elected representatives have evolved into a protected royal class.
IMO the majority of the members of all three branches see themselves as a protected class. A little more equal as it were. And conduct business as such.