Sponsorship, asset level, depends on the form of visa. Determine which kind this person is applying for and the website will list the requirements. You can also call the dept of state directly or this person can go to a U.S. embassy. The visa process is incredibly bureaucratic, one wrong form can set the process back for months. you want to follow the instructions to the T directly from the source, instead of relying on anecdotal information, so go through the department of state website or call during the weekday.