During this interview they Consular officer will assess whether you understand what you are doing and are acting voluntarily, require a renunciation fee before finalizing the application.
Since the application is taken very seriously, it is important that it be prepared professionally by a qualified U.S. immigration lawyer and that all taxes be filed and updated at the time of the renunciation appointment.
Taking this step does not remove a person’s ability to enter the United States as a Canadian citizen, but they can no longer vote or work in the United States without a work permit. As such it should be undertaken with the utmost of care.