Why would this be flagged? They made a pretty good case.
I personally know someone who has been in the US for more than 10 years, highly educated (with a PhD in engineering), employed in healthcare research, pay more taxes than most American, never break a law, etc. Basically the ideal citizen. Except he isn't a US citizen and according to him, unless he marry a citizen, it isn't likely for him to be one anytime soon.