Furthermore on "proves". It is said in rules:
***In order to accept an artist who was not born, did not grow up or does not currently live in a country/region but only has roots from that country, then he/she must have special ties with that country (speaking and/or singing in the language of the country, addressing himself as a person from that country, being famous in that country, visiting that country often, representing or trying to represent this country in ESC if it's a European country, and other factors). Having the citizenship of a country just because of someone's descent is not enough to qualify to represent that country. Moderators have the right to decide about the eligibility of an artist who lays in this category.
One more reason! In which language is song I showed you?? That language is not official in USA or NYC!