as an exercise of the rulemaking power of the House of Representatives and the Senate, respectively, and as such they shall be considered as part of the rules of each House, respectively, or of that House to which they specifically apply, and such rules shall supersede other rules only to the extent that they are inconsistent therewith; and

with full recognition of the constitutional right of either House to change such rules (so far as relating to such House), at any time, in the same manner and to the same extent as in the case of any other rule of such House.