"Majority of Americans Feel Like 'Stranger in Own Country'"
That's not what the survey revealed.
This is the actual premise of the survey:
“Simply put, Trump’s candidacy taps into a deep, visceral fear among many that America’s best days are behind it. That the land of freedom, baseball and apple pie is no longer recognizable ; and that ‘the other’—sometimes the immigrant, sometimes the Non-American , and almost always the nonwhite—is to blame for these circumstances. This pure unabashed nativism is Trump’s brand of populism and is fit for purpose in 2015. It both gives him electoral strength and popular appeal.”
The rise of Neo-Nativism: Putting Trump into Proper Context – Ipsos Ideas Spotlight
The issue therefore concerns an increase of nativism in American society, an unwarranted fear of, and contempt for, immigrants, and the bigotry that is a consequence of that unwarranted fear and contempt.
That a plurality of Americans might 'feel' this way in no way 'justifies' their errant perception; nor does it serve as a partisan 'indictment' of current public policy.
The bane of nativism is sadly endemic in American society, hence the Framers' wisdom to create a Constitutional Republic rather than a democracy, where the rights of all persons are safeguarded by the Constitution and its case law from the unwarranted fear of change, diversity, and dissent common to too many Americans.