Is the Midwestern American English accent unique?

Why is it that every time I speak with  Indian students in America doing a Masters they end up speaking in a fake American accent but when I speak with Indians who have been there for 3 decades they speak neutral English which is quite understandable?

• I have always heard these Indians who come back to India after spending a year or two in America burping out English with a fake accent.On the other hand Indians who have been there for a long period of time speak normally and even if their kids speak in an accent it is so because they were born there and interacted mostly with the American crowd.I as a Bengali who stayed 2 decades of my life in UP a Hindi speaking state don't seem to have any mother tongue influence over my speech unless I try faking a Bengali accent.Having said that  logic says a person cannot develop an accent overnight unless he is tortured to speak in an accent.End of the days when these desi Americans speak with their friends or family,the neutral English takes over.What is the utility of speaking in a fake accent which is not understandable by a majority of the crowd as opposed to clear neutral English which is way too easy to understand.I mean that could be the reason the BPO industry worked it's way out as the most successful outsourcing model. Are there some capitalistic interests at bay while trying to speak normal English?

• Answer:

  When I am in America, outside university campus, Americans fail to understand my "neutral" accent, specifically my Indian accent. We have to modify our accent to match with American accent so that we are understood and get along. Doing this over a long period of time we get used to talking with American accent which is not perfect yet. This leads to Indians living in India thinking that we are trying to fake an accent. Yes, there may be some people who really try to fake accent, but really most of us do not care to fake an accent to Indians. Accents of people who are native English speakers are the correct accents. Americans, English, Australians etc. Yes all variations.  Indian accent is incorrect accent.  Let me define my interpretation of the "Indian accent". Most Indian school do not teach the correct pronunciation of English words, they do not teach intonations, emphasis within a word etc.  Collection of these inaccuracies in speech along with the influence of accent of our native language makes up the  "Indian accent".   Most of the time when I have to spell my name to a person in the US, they always write "B" instead of "P" in SWAPNIL. This is because in India we generally say "peee" . Americans say it more like "Phee".   I recently started saying it as "phee" and they don't make mistakes so frequently now.  We just want to sound correct and comprehensible. It takes us some time to get that understandable accent. You see us mostly during this transitional period. Many Indians in USA still do not care to modify their accents. Some of them also order "steek" in a steakhouse and they give out their numbers like "three faayu two, wo wo two, nine nine yeyt". Don't ask whether they get a call.  I experienced many a times that people do not understand my (Indian) way of pronouncing English words, so I started adapting. Bottom-line for me is: I try to speak in the way convenient to the target audience. "Are there some capitalistic interests at bay while trying to speak normal English?" Kuch bhi?? (really?)