Report Abuse. There is no age restriction but pet shop owners are usually very responsible people and will not sell a puppy or a kitten or anything else to an unaccompanied child.
When the price goes up, naturalization rates go down. The current filing fee for Form N-400, the Application for Naturalization, with U.S. Citizenship and Immigration Services, for adult applicants is $680 ($595 plus an $85 biometric fee). This is certainly a prohibitive cost for individuals living below the poverty level.
The Cost Element of US Citizenship. The cost of obtaining the forms and filling the applications amounts to a total of $680. This is the amount that everyone seeking citizenship is expected to pay. The $680 caters for the application fee of $595 while the balance ($85) is the fingerprinting fee.