Our office is in NJ, but the employee will only be working at client-site in Arizona. Which Service Center should we file his H1B papers, Vermont or California? We went to the USCIS website but we are not sure because it says file where the employee will be working if the employee will be working at MORE than 1 location. In our case he will only be working in 1 location and will not be working at our headquarters. Thank you!