Thank you for your response. Additional information, this is a family based immigration visa my sister sponsored. The country is China. I am a retired accountant, having worked in small places only.
I have nothing special in my background, not involved in any sort of political parties, maybe a couple of parking tickets might come up if anyone runs me through the system.
The only reason I made arrangement to travel is because my son is admitted in a University in the U.S and I would like to travel with him to the U.S before his school starts and I am planning to come back after a month or so to make other arrangements. Otherwise I would not have any need to rush.