Tennessee has a statute for that:
UPDATED TO ADD: The significance of this statute may not be immediately obvious. It creates a “particular civil disability that occurs upon the conviction and remains in effect throughout the defendant’s life unless restored by a specific statutory procedure.” State v. Johnson, 279 S.W.3d 522 (Tenn. 2002). Accordingly, the statute generally prohibits a person who has served time in prison from ever serving as an executor, administrator, guardian, conservator, or other fiduciary in the state of Tennessee.
Source: T.C.A. § 40-20-115