Hi...I hope you or someone can help with this I-864 question. It is question 21F in the household section. It asks if I have ever sponsored anyone in the past on the I-864 form. And I have, back in 2001...but don't know if it was upon the I-864 form, if the person is a US citizen now, her whereabouts or how to contact her (ex wife). So therefore, I don't honestly know how to answer the question, or whether to put a number down or not. Maybe I should write immigration a letter along with the form? This is being done for my adjustment of status, my wife's that is. I have no paperwork or records from the past sponsorship other than the divorce agreement. Thank you much for your time. Sincerely, Mark