Applying for a visa on behalf of another person is generally permitted, but there are specific guidelines established by the U.S. Department of State that must be followed. The applicant must complete the visa application themselves, but another individual can help with the process, including assisting with form completion and gathering required documents. It is important for the applicant to be fully aware and involved in the application process, as they will need to answer questions during the visa interview and provide any necessary information. Additionally, the person assisting with the application must ensure that all submitted information is accurate and truthful, as any discrepancies can lead to application denials. For complete guidance on this matter, it is advisable to refer to the official website of the U.S. Department of State, which contains updated information about visa applications and requirements.