Use this form to show they have adequate means of financial support and are not likely to rely on the US government for financial support. The main requirements for adjustment of status are as follows: You must file Form I-485 with USCIS.A Visa number must be available for you. Follow the steps below before your immigrant visa interview at the US Embassy in San Jose, Costa Rica. An affidavit of support, (USCIS Form I-864), is required for all immediate relatives of US citizens and lawful permanent residents. Complete Part I, Items 1 – 7, with the information as it appears on the current certificate. 5. The PDF applications and forms cannot be filled out within the browser. You must download and complete your application or form using Adobe Acrobat Reader. At MJ Law, we help people secure US immigration status for immediate family members and other relatives in San Jose and Silicon Valley. At MJ Law, we help people secure US immigration status for immediate family members and other relatives in San Jose and Silicon Valley.