Call Us! A consultation is an essential opportunity for ISG to provide you with a detailed analysis of any issues or problem. Moreover, the initial consultation provides the firm with the necessary information in order to provide you with: Options Analysis Timeline Costs for achieving the results sought Call us at (202) 234-0899, or simply e-mail us. Our email address is mail@immigration.us.com. The office hours for Immigration Solutions Group are Monday through Friday, 9 a.m. to 6 p.m., EST. Messages can be left at any time in our voice mail system. Thank you.