the real reason for trumpy's success is his appeal to racists and bigoted americans who disliked president Obama and rise of blacks in the federal government and power.  their real slogan is to make America white again, which in their minds will make America great again.  they don't like blacks telling them what to do.  all of trumpy's policy reflects this attitude to make America white again.  let's call a spade a spade, he is a bigot and wants to take America back to the slavery days, when whites males ruled the country.