It wont create any issue with process per say. US visa needs last name. In case you don't have last name, they will use your first name as last name and firs name will be unavailable (FNU). So if you name is Kumar, according to visa your name will become FNU Kumar.
Issue is when you to US, they will use the same name (FNU Kumar) everywhere (your SSN, DL, all other legel documents.