The Convention provided for a universally recognised code of rules under which a will made anywhere, by any person of any nationality, would be valid and enforceable in every country which became a party to the Convention. Belgium, Bosnia-Herzegovina, Canada (for 9 provinces, not Quebec), Cyprus, Ecuador, France, Italy, Libya, Niger, Portugal Slovenia, The Holy See, Iran, Laos, the Russian Federation, Sierra Leone, the United Kingdom, and the United States have signed but not ratified.
Intentional physical destruction of a will by the testator will revoke it, through deliberately burning or tearing the physical document itself, or by striking out the signature.
A will may not include a requirement that an heir commit an illegal, immoral, or other act against public policy as a condition of receipt.
In community property jurisdictions, a will cannot be used to disinherit a surviving spouse, who is entitled to at least a portion of the testator's estate.
Opponents of such advocacy rebut this claim by pointing to the ability of same-sex couples to disperse their assets by will.