想把我爸和我弟弟（我爸和后妈的儿子）办过来。看到CHECKLIST里面有一条<br />
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Certified copies of documents to verify custody and access arrangements for children under 18 years of age (unless both parents are included in the application.)<br />
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问题是我的申请里面只有我爸和我弟弟，我需要这个抚养权的证明吗？如果要的话，要去哪里开这个证明呢？<br />
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谢谢