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您对这种特殊青少年移民了解吗？ 美国对这种儿童被忽视， 被abused 的行为要比中国重视。 

-The link you cited is about the family violence occurred within US, not related to adoption.. The United States have very serious law to protect children and women from family violence within US. If the family violence takes place outside US, the law you cited does not apply to it.

 

Here is one example:
嫁美国公民或者绿卡持有者被家暴, 如何自己申请绿卡(VAWA I-360) - st.paul发表于 移民论坛 - 论坛 | 文学城 (wenxuecity.com)

 

This example is for the spouse of a US citizen or green card holder, but the principle is the same for the family violence to children.