Here:
Adam Walsh Act
Pursuant to §127 of the Adam Walsh Act all federally recognized Indian tribes are entitled to elect whether to carry out the requirements of this section or delegate the functions to the state(s) in which the tribal land is located.
Turtle Talk 
If anyone missed the 11th National Indian Nations conference and would like a copy of Umatilla’s draft model SORNA compliant code and/or policies and procedures manual, feel free to email me at BrentLeonhard@ctuir.com.