The following is a copy of a fact sheet obtained from the Italian Consulate in Los Angeles in August, 1994.
INFORMATION ON ITALIAN CITIZENSHIP FOR U.S. CITIZENS OF ITALIAN DESCENT
If you were born in the United States you may also be considered an Italian citizen if any one of the situations listed below pertains to you:
IF #1 APPLIES TO YOU, you must obtain the following documents:
IF #2 APPLIES TO YOU, you must do **all of the above**, but with regards to your MOTHER.
IF #3 APPLIES TO YOU, you must obtain your paternal grandfather's birth certificate from Italy, his marriage license, and all of the documents listed for #1, except for your father's naturalization certificate, because in this case you will need your paternal grandfather's naturalization papers.
IF #4 APPLIES TO YOU, you must obtain your maternal grandfather's birth certificate, his marriage certificate, and all the documents listed for #2, except for your mother's naturalization certificate, because in this case you will need your maternal grandfather's naturalization papers.
If you are a resident of the jurisdiction of this Consulate General (Arizona, New Mexico, California (counties of San Luis Obispo, Kern, San Bernardino, Santa Barbara, Ventura, Los Angeles, Riverside, San Diego, Imperial Valley, and Orange), you should bring all the pertinent documentation to this Office between the hours of 8:30 and 12:00 noon, Monday through Friday. We will forward all the certificates issued in the United States to Italy to be recorded there. After we have been notified that the documents have been accepted and recorded, a process which generally takes four to six months, you may apply for an Italian passport.
If you are a male under the age of forty-five, once your documents are recorded, you will have military obligations to Italy, which can generally be fulfilled by completing the necessary paperwork. However, this means that if you are under the age of twenty-six you may not permanently reside in Italy for reasons other than study unless you wish to serve in the Italian armed forces.
PLEASE NOTE:
IF YOU ARE CONCERNED THAT ANY OF THE ABOVE PROCEDURES MAY AFFECT YOUR U.S. CITIZENSHIP YOU SHOULD CONTACT THE LOCAL U.S. AUTHORITIES.