尊敬的8老师您好
请教我们（美国公民）的孩子成年未婚在加拿大工作，加拿大公民来美国的
1.成年未婚女子办理来美国的话大概需要多长时间？
-It takes about 9 to 10 years.
办理期间如果来美国探亲或旅游是否有影响？
-It should be fine because it takes too long for your child to be qualified for the immigrant visa application.
2.如果办理期间孩子结婚，那这个申请是否继续有效？
-Yes, but the category will be upgraded from F1 category to F3 Category which takes about additional 5 years in 排期 compared to F1 category. But your child's spouse and kid can immigrate into US together with your child in this case.
如果不能继续有效，有办法转成家庭移民吗？
谢谢老师的帮助，期待老师在忙中回复。
