You guys keep trying to differentiate between the members of Congress as individuals, and the Congress as some sort of metaphysical body ~ maybe a "Great Mother Goddess", as though the individual members are subject to whatever the Executive or the Courts might wish to do.
That is simply not the case. The Congress as an institution is necessarily protected by the Constitution against the other branches, and the constituent parts of Congress, its members, are likewise protected UNLESS the leadership and authorities within Congress decide otherwise.
In the past some Congressmen and Senators have been surrendered to the magistrate, but only with the approval of the House and/or Senate leadership.
I know this is a difficult concept for you rebellious scoundrels to accept, but to have a Congress, even if it means having a Jefferson or two lying about, is vastly superior to having a dictator with a majlis.