-U.S. immigration law specifically bars U.S. entry or a green card to immigrants who have a combination of two things:
?a physical or mental disorder that can be clinically diagnosed and;
?behavior associated with the disorder that may pose or has posed a threat to the property, safety, or welfare of the immigrant or to others in the public.
The law also looks out for immigrants who have had in the past a similarly harmful physical or mental disorder that could recur or lead to other behavior that is harmful to the immigrant or others.
So, if your sister have not had the violence history which is harmful to others, and the Dr. prove that her illness is healed or stable, it is very possible for her to get the visa to visit you. Of course, it may be a little difficult for her to immigrate into US unless her illness is healed or not threaten to others, and also her immigration will not have public charge in the future.
我知道出國都有體檢,又在網上查了一下信息,好像精神病患者是不可能來美的。不過如果醫院出個康複證明呢?
感謝各位的各種提議。