Insufficient funds http://femjoy.in.net/ femjoy angels The school’s international student adviser will want to see proof that your nephews can afford to pay for tuition, books and living expenses without having to work. If you will be supporting them while here, provide each completed USCIS form I-134, Affidavit of Support. Attach your tax returns. If the students will be living with you while here, explain that in a letter.