(a)Filing an application - (1)Filing of application required. Every alien seeking a nonimmigrant visa must make an electronic application on Form DS-160 or, as directed by a consular officer, an application on Form DS-156. The Form DS-160 must be signed electronically by clicking the box designated "Sign Application" in the certification section of the application. (2)Filing of an electronic application (Form DS-160) or Form DS-156 by alien under 16 or physically incapable. The application for an