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.
Many immigrants also spend money on test preparation materials to ensure they pass the test. If we add up all the various fees required to come to the US and obtain citizenship, the total falls somewhere between $4,000 and $11,300. Most people end up spending between $6,000 and $8,000.