I have a nonimmigrant visa that will expire soon and I would like to renew it. Do I need go through the whole visa application process again?
Yes, you will have to go through the whole visa application process each time you want to apply for a visa, even if your visa is still valid. Please send an e-mail to the consulate at which you will apply for a visa for additional information. firstname.lastname@example.org , Consulardurban@state.gov or email@example.com