请教各位大侠:我想把AOS转成H1B,已经得到批准,但是要出美国签证生效。请问可否去墨西哥或者加拿大签?如果可以,是否要先拿到墨西哥或加拿大的签证? -Because your current status is not H1 yet and if you go out of US to get the H1 visa without using AP, your I-485 may be affected.