can i get my husband back after being deported for 20 yrs

Whether your husband can return to the US after 20 years depends upon the ground of deportation. I would suggest that you consult with an immigration lawyer bringing him or her the entire file so that he or she can make an effective examination and opinion. 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.