How to Immigrate to the United States

legrandrosbif asked:

Two years ago I suffered from hypoglycemia at Detroit International Airport and was taken to hospital for a few hours. Unfortunately I had no insurance and was eventually presented with a bill for $4,777 for X-rays and pain killers (I broke 3 ribs and my wrist for which little treatment was offered). I was in no position to pay for the teatment and the hospital decided to take no further action but they did warn me that I would not be allowed entry back into the USA whilst the bill was unpaid. Can anybody tell me if this is true, please?

greg asked:

Am an f-1 student and need a social security number and card.I have just done one semester and will be going to my 2nd semeter this fall,do i qualify to apply for a social security number and card. 2.How can my school help me in getting the SS number and card? 3.How long on the average does it take to receive my card if i filed in my suburban community of about 90,000 residence.?

Melissa M asked:

what is the qualification as American Citizen to sponsor a friend from other country to stay in US? What is the requirements to be pass to US immigration?