Do I have to register for selective service if I have a valid i 20 (F1 student) but my visa is expired?

Individuals who are holding valid nonimmigrant status in the US are not required to register for selective service in the US. In your case, you would be maintaining legal nonimmigrant status if you had a valid I-20 and were still attending school on a full-time basis. Expiration of a visa is of no account as the visa is only good for traveling back and forth .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.