請問8老師關於privacy 的問題

Hi 8 老師：I am helping my families to immigrate to the U.S. I have received the letter from National Visa

Center early this year. I am working on Form i-864  affidavit of support. I have a personal question about

the privacy issue. I am happy to suppport my family to come here. But do I have to disclose all my financial information to my family members that I support in this immigration process. Is there any way

that I can submit I-864 and tax return information directly to the goverment? I appreciate your advice.