When the Edo bakufu (Japanese feudal government headed by a shogun) was established, it enacted the Kinchu Narabini Kuge Shohatto (Court Noble's Act), whereby the structure in which the appointment of a regent or chief advisor to the Emperor could not be made without a recommendation by the bakufu.
江戸幕府が成立すると、幕府は禁中並公家諸法度を制定して、摂政・関白は幕府の推薦なくして任命できない仕組みとなった。