I am in the process of applying for permanent residency in a Latin American country. As part of the process, said LA country has requested authenticated copies of my US taxes for the past 3 years.
I obtained certified copies (expensive) of those tax filings from the IRS and sent them to the State Department. Instead of authenticating them, the State Dept sent them back with a letter that says "The document must be acknowledged before a notary public".
This seems to violate the basic rule of authentication which is that authentication must happen at or above the same level where the document was generated.
How is some local notary to know that these are valid documents and why would the State Dept not authenticate them directly?