I just applied for my I485 / EAD / AP. I think I should have the approval of AP / EAD by Dec 2001. I also have canadian landing papers (Canadian Green card approval paper) which is valid only if I enter canada before March 2002. I am planning to land in canada in March 2002, activate my green card, and return to USA immediately . On the way back into USA from canada, will US immigration cause problems because of my canadian landed immigrant status ? Does becoming a canadian landed immigrant invalidate I485 application / EAD / AP? (Ofcoz , I will be giving up canadian green card the minute I get my I485 approval. Canada is just a safety measure , just in case something very bad happens with US immigration. )