A new poll found that 66% of Americans are worried about the U.S. becoming involved in another war in the next four years. Of that number, 36% are very worried about the prospect and the other 30% are somewhat worried, according to an NBC News and SurveyMonkey poll. Respondents were rigidly divided between party lines, with 88% of Democrats and Democratic-leaning voters are concerned about the likelihood of the U.S.