我儿子(和前夫所生)想来美国和我在一起,我要填什么表格,做什么手续,和准备什么相关的资料呢?
-Depends on what purpose for his travel. If he just visits you temporarily, then he may apply for B-2 visa; if he wants to study in US, he may just apply for F-1 visa. If he wants to immigrate to US (i.e. get green card), then you may file I-130 for him to apply for the immigrant visa in China following the I-130 Instructions.