Unfortunately, many, if not most, will consider your nationality (less of an issue) and medical school (more of an issue) when determining who to interview. Aside from the fact of ensuring that you are able to start on time, due to licensing and immigration issues (it is always a gamble for residents since the match is now in March instead of January when I went through) - there will be the fact that many faculty may not be aware of your medical school curriculum, reputation (aside from the fact that it may be among the highest in your region), similarity with USA culture and expectations, etc. While there is a higher likelihood of attaining a fellowship with foreign qualifications (due to increased time allowed for licensure, visa, etc) - the same cannot be said of primary qualifications when entering the match.
Most faculty understand that the USMLE is a licensing exam - and has little to do with clinical competence or personality traits - it is used as an initial tool for evaluating applicants. That being said - you have clearly excelled in that area. You have also done well in your research interests. That being said - The goal of USA residency programs is to train future otolaryngologists to meet the needs of the USA. Our funding for residents comes from the tax payers dollars, and it is estimated that it costs close to $1,000,000 to train a competent surgeon. While we look at FMGs when considering who to invite for an interview - there has to be some compelling reason to spend our communities dollars to train a surgeon. I can understand someone who went overseas to get their education - let's face it, admission to medical school can be a lottery - BUT, most of the FMGs we have interviewed in the past are local people who wish to practice in the community (whether that be academic or private). It would be difficult to justify accepting someone from another country, who studied in a third country, into our training program with the possibility that they would take their training (which, as discussed, is valued at close to $1M) abroad. Especially when considering that there is a severe shortage of ENTs here in the USA.
That being said - several FMGs (or IMGs or whatever the PC term is currently) are successful every year, and you may be one of them. I would, however, have a back up plan and realise that you may need to either seek training in the country of your medical training, your home country, or may need to choose a residency that is less competitive.
While the above comments may seem xenophobic - I assure that we recognise that there are many highly qualified applicants from abroad - and in fact many of them have academic credentials that are above local candidates - but the bottom line is that as USA academic faculty, we are obliged to train general otolaryngologists to meet our communities needs. At the fellowship level - things become a bit different. There is not the Medicate funding that comes for the residents, and at the sub-specialty level, we are training (hopefully) future world leaders in the sub-specialty fields. A fellow is often able to help defray the costs of their training via increased throughput in both the clinic and the OR (which I can assure you, a resident does not, especially in their junior years).
Regardless, best of luck - as I am sure this is a stressful time for you.