My father's relatives immigrated to America and got a green card. Can you handle me and my mother now? I am eighteen years old.

The green card allows the whole family to do it together. When applying, your father will apply with your mother and you. It is not too late. You can apply as long as it is below 2 1. Security is really a problem. Sister or any third party can be your guarantor, or you can add up to guarantee. That is to say, father and sister will protect you together. If dad has friends or sister has a husband, they can protect you together and deal with you first, because you are almost 2 1. It takes some time to apply for a green card, so you should start applying for a green card now. When it is approved, your father may have paid the tax for the first year, and the green card deposit is not too high. At that time, maybe your father's income is enough to protect you.