- For Attorneys
If the power of attorney must be signed in the foreigner's country of residence, outside of Mexico, the power of attorney in order to be valid in Mexico, must be signed before a notary and then must be accompanied by an "Apostille". Apostilles are attached to notarized
documents being sent to nations that have signed the 1961 Hague Convention Abolishing the Requirement of Legalization for Foreign Public Documents.
More than one person may be named as an agent in a power of attorney. If you appoint two or more Agents, you must decide whether they must act together in making decisions involving your affairs, or whether each can act separately.