As a returning national, it's important to have proof of eligibility to reaffirm your status as a citizen or resident of your home country of origin. Proof of eligibility includes documents or items, such as a valid passport, residency permit, or national identification card, serves as evidence to authorities and immigration officials that you have the right to return. By ensuring you have the necessary documentation readily available, you can expedite the immigration process and smoothly transition back to your homeland.