The authority and jurisdiction of the Kaw Nation shall extend to all the territory within the boundaries now known as Kaw lands, and to all lands which may be acquired for the Kaw Tribe by the United States or which the Tribe may acquire for itself, and to all Indian country of the Kaw Nation and its citizens as now or hereafter defined by Federal law. The Kaw Nation may exercise its authority and jurisdiction outside the territory above described to the fullest extent not prohibited by Federal law.