Legal immigration for grandparents?
2 attorney answers
Since "[your] husband is n o t the father of [your] son", even if your son is a US citizen, your son may have troubles petitioning for the stepfather if your marriage was after the son's 18th birthday.
You may want to review your facts with an attorney. There are many bases for a person to immigrate to the US. Besides the family relationships, you and your husband may qualify on some other bases, especially if either of you are very wealthy, highly educated, or has special skills.
Is your son an U.S. citizen? If so as "immediate family" he may consider a petition for his parents to follow and join him as lawful permanent residents. I handle family unification issues as a family lawyer, I include immigration as part of my family practice. My telephone is 1-760-328-5073 or email [email protected]
Otherwise, the case for grandparents is not strong as compared to parents, spouse and siblings.
There are other basis for immigration in addition to family based petitions.