Should I sue to get my son over here or leave it alone for now?

I talk to my son on msn. I see his facebook. He told me his dad hits him and broke his ps3, which I bought for him when I was home. He also told me he found his dad’s weed. My daughter is coming over because she wants to, my son wants to stay there. I insisted he come here, he told me that he is bigger and stronger than his dad now and not to worry about it. He also had a girl staying over night, and told me they were not having sex. (he’s only almost 14) . I am re-married to someone he’s only met several times. If I sue and bring him over here I am worried that he will be angry and reactive at home. He says not to worry about him. I don’t know what to think.