“Are those “international passports” different than the US passports”
Well, my memory is failing, but I am almost sure that I did not need my BC when obtaining my passport in Memphis, some years ago.
I did, however, have to provide my BC when applying for Social Security, a few years ago, through the embassy in Warsaw, Poland.
I do not know what an international passport is.
I filled up my first US passport and had to have new pages added.
I now have a new US passport, obtained this year in the Philippines, as the last one expired.
They are good for ten years.
As far as I know, there is no such thing as an “International Passport”. Passports are issued by individual countries to certify the identity of a person who is a citizen of that particular country. Each country sets its own proof of citizenship, though I would presume that most require a certificate of birth or of naturalization if one is an immigrant.