Will my biological son be able to petition for me being that he was adopted

That depends upon whether your son gained any immigration benefits from his adoption. For example, if his adoptive parents gave him immigration benefits to the U. S., he would not be able to petition for you as his natural mother. If he immigrated independently to the U. S., he would be able to petition for you assuming that he goes to court and terminates the adoption. Due to the limitations of the Lawyers.com Forums, Alan Lee, Esq.'s (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.