Yes. Anyone coming to the U.S. usually needs a temporary work visa. To come to the U.S. as an au pair for your foreign employer, you will need a domestic employee visa. To qualify, you must demonstrate that you are coming to the U.S. to work and plan to remain for a specific, limited amount of time. You must also have at least one year’s experience as a personal or domestic employee that can be confirmed by former employers. Your current employer must also meet certain qualifications.