Idaho Code § 15-2-602: Choice of law as to meaning and effect of wills.

The meaning and legal effect of a disposition in a will shall be determined by the local law of a particular state selected by the testator in his instrument unless the application of that law is contrary to the provisions relating to the elective share described in 15-2-201 through 15-2-209, the provisions relating to the exempt property and allowances described in 15-2-401 through 15-2-405 or any other public policy of this state otherwise applicable to the disposition.