Getting A Marriage Visa Or Spousal Visa For The United States
In several cases, the U.S. immigration organization has lots of controls to avoid "insiders" control results.
Even though "notario" means an attorney in other countries, a notary in the United States is simply a person who is licensed to witness important legal affairs. The law is always changing and they have to not only know the law but stay on top of the every changing laws.
They hope you will be too scared to report them to the authorities.