Given the fact that household income of $200,000 or greater puts you in the top 2.67% my answer would be no these folks are not upper middle income they are in the top 2.67%.
Extending the Bush Tax Cuts for folks who make above $250,000 is ludicrous considering the "dire" nature of our deficit.
Remember that the FICA taxes (Social Security, is capped at $110,100 of income).
The Simpson-Bowles commission suggested cutting SS 3% across the board. Why not uncap the FICA tax to the first $250,000 of income so these other "middle-incomers" can contribute their fair-share?
Taking Donald Trump's stance, your opinion matter's not since you are a Canadian - how are you "entitled" to talk U.S. politics? Also as Mitt Romney explained you don't matter because as a Canadian you are not paying any U.S. taxes like the bottom 47% of Americans.