Where should we file for divorce

Hello, Just to give you some background, my wife and I got married in Delhi four years ago. We both were living in USA before the marriage. After the marriage, came back to USA and started living together. We both are independent and have been working since the marriage. Due to the unsolvable conflicts, I moved out of the house about 16 months back to give both us a break but unfortunately, we are back to square one and have convinced ourselves that getting divorced is in our best interest. My questions are: 1) I know we could file for divorce in USA but would it be valid/acceptable in Indian law? 2) Are we eligible to file for divorce in India? if yes, then where? because we got married in Delhi but the marriage certificate was made in Haryana (I don't know how that happened). My wife was born and brought up in Delhi and I was born and brought in Haryana. 3) Since we both live in US, I understand we have to come to India to sign papers and complete other formal but can we initiate the matter while we are here (By providing POA) and then come to India for the final work? The reason we are getting divorced is due to the major personality conflicts and therefore could really never grow our family further so at least we don't have to worry about kids custody or anything like that. Our family do not believe in dowry so we didn't take single rupees from girl side of the family. Sorry for the long questions but we are just trying to figure our the best way out for us. Thank you for your time and patience for reading and responding to my queries!!