请教大家，在去年phd毕业之后申请了OPT，今年申请了一个master program，想让爸妈来探亲，请问I20是要提交包括之前phd期间的所有I20吗？还是现在上学的I20就可以了？OPT card和期间的工作和收入证明需不需要？
-Only need your current valid I-20. Unless you will pay the cost for your parents travel, you don't need to provide your income or bank deposit information.
-Only need your current valid I-20. Unless you will pay the cost for your parents travel, you don't need to provide your income or bank deposit information.
