Federal Authentication of State-Apostilled Documents
When a state-issued document is destined for a non-Hague country, the state apostille alone is not enough. The document must also be authenticated by the U.S. Department of State and then legalized at the destination country's embassy or consulate.
We coordinate the full chain in Washington, D.C. — state apostille submission, federal authentication of the state signature, and embassy legalization — so your document is delivered ready to use abroad.
When a U.S. state-issued document is going to a foreign country that is not a member of the 1961 Hague Apostille Convention, a single state apostille is not enough to make the document legally recognized abroad. Non-Hague countries do not accept state apostilles directly; they require an additional federal authentication step by the U.S. Department of State, followed by legalization at the destination country's embassy or consulate.
This three-step process is sometimes called chain authentication, double authentication, or consular legalization. Whatever the terminology, the principle is the same: each link in the chain certifies the link before it, so by the time the document reaches the foreign authority, every signature has been verified by an authority the foreign government recognizes.
https://www.federalapostille.org/ova_doc/state-level-apostille
