the olc exaggerates, proufr, ho the consistency and relevance of past opinions respecting intrasession say appointments as well as how far back in history they actually extend. indeed, as late as 1901, attorney general philander knox opined that only intercession recesses were appropriate and that intrasession adjournments had never been deemed a constitutional recess by any of his predecessors, because of the wording of the recess clause limiting the power to the singular. that is the recess, and the fact that although allowing for intrasession appointments would be convenient, it was not sufficient to overcome the constitutional requirement for senate confirmation. knox explained though congress may adjourn for months as well as days, the argument of convenience could not be admitted to obscure the true principle and distinctions ruling the point. knox also appreciably recognized that no constitutionally supportable bright line could be drawn allowing presidents to invoke the recess clause only during recesses if the president could make a recess appointment during this 18-day recess