请问免面签要准备除了下面required documents, 还要邀请信，邀请人资金证明吗？

Required for all applicants:

• Passport: Passports must be valid for at least six months beyond your intended period of stay in the United States.

• The?DS-160 application form  confirmation page.

• Your most recent original visa if you are going to renew it. Do not submit expired passports that do not contain a U.S. visa.

• One Photograph: Two inches square (51mm x 51mm) color passport/digital photograph, less than 6 months old, against a white background, full frontal view, without eyeglasses. Detailed guidelines for taking and submitting a quality photograph are on the U.S. Department of State website?here . Your application will be refused if your photograph does not meet the requirements.

• The Interview Waiver Checklist with applicant’s signature that you must download?here .