The law on keeping exotic animals as pets varies from each state in the United States. Some states require a license on all exotic pets, some states require a license for some exotic pets, and some have no restrictions on exotic pets.
According to the American Bar Association, there are many levels of jurisdiction that a person may need to go through in order to obtain an exotic animal as a pet. Check local legislation for any city, township or county laws or zoning ordinances. Next, check state legislation to see if your state will allow you to own a giraffe. Finally, check federal legislation to see if owning a pet giraffe requires licensing through the U.S Department of Agriculture. You may also run into issues with obtaining a giraffe through purchase and importation.