Hello. I am a legal immigrant holding a dependent F-2 visa. I am not legally allowed to work in the US, thus without employment and without health insurance. I am dependent on my husband who is a graduate student. I happen to visit the emergency room and incur some debt. Despite the fact that I told them my status, I continue to receive letters from collection agency about unpaid medical bills. I have ignored the letters for some time now, but have heard stories of lawsuit concerning unpaid fees. I do not have a SSN and thus not worried about any credit ratings. What is the worst that could happen if I don't pay the collection agency? could I be sued and charged to court? Thanks.