When the Edo bakufu implemented Kinchu narabi ni kuge shohatto (Acts Governing the Imperial Court and Nobility) following the Siege of Osaka, Katsushige directed and monitored implementation of the ordinances by the Imperial Court to ensure that the laws were not being ignored.
大坂の陣後に江戸幕府が禁中並公家諸法度を施行すると、朝廷がその実施を怠りなく行うよう指導と監視に当たった。