In order to help his wife apply for a green card, should the husband holding a green card directly help his wife, or apply for citizenship first?

Green card holders must live in the United States for more than six months every year, otherwise their green cards may be cancelled. Green card holders apply for a green card for their spouses, which belongs to the second priority category. The current schedule is about two years. If your husband does not live in the United States for six months in a year, his green card may be cancelled whether he applies for it for you or not. If he wants to become an American citizen, he has the same conditions, and he must produce a five-year bonded record. Of course, if he applies for naturalization.