Legal document often required by immigration authorities, such as the United States Citizenship and Immigration Services (USCIS), to demonstrate that an individual or entity is willing and financially able to support a foreign national who is seeking a visa to enter or remain in a particular country. This affidavit serves as a formal commitment to provide financial support to the immigrant, ensuring they will not become a public charge and can cover their living expenses while in the host country. Typically, the sponsor's financial information and legal obligations are detailed in the affidavit, and it may involve submitting financial documents and evidence to prove the sponsor's ability to support the immigrant. The Affidavit of Support is a crucial component of the immigration application process, demonstrating the immigrant's financial stability and eligibility for the desired visa category.