My parents visited us starting May 15 - August 15, and they had to leave due to an emergency with the house plumbing; They are planning to come back Oct 15 and stay with me until January 15. Would this be OK? My father still works for the Govt of India and we are able to show strong roots to the country(in the form of his employment letter + papers related to the home that we own), also this is the first time they came to US. We are planning on doing the port of entry in Abu Dhabi just to be sure, but I would love to hear your experiences.