ordinarily be assessed under the law that existed when the conduct took place has timeless and universal appeal." Id. (internal quotation omitted). "Retroactivity is not favored in 2 The statute was amended again in 2006 to its current version, which further modifies the limitations period to the life of the

e "substantial implementation" standard under SORNA and in connection with SORNA's concept of "conviction" (parts ILE and IV.A of the guidelines). Retroactivity: Some commenters objected to, or expressed concerns about, provisions of the guidelines that require that jurisdictions apply the SORNA requirements

donor intent, protect its endowment, assure generational equity, and use the endowment to support the purposes for which the endowment was created. Retroactivity. Like UMIFA, UPIA, the Uniform Principal and Income Act of 1961, and the Uniform Principal and Income Act of 1997, UPMIFA applies retroactively to i