I'd be tempted to say ALL welfare is un-American, but that would be far too vague and generalized a statement.
What, specifically, were you referring to when you asked the poll question?
Sometimes I think we're alone. Sometimes I think we're not. In either case, the thought is staggering. ~ R. Buckminster Fuller
Low/no-interest treasury loans, Federal grants, tax breaks, subsidies...EAR MARK$, PORK BARREL.
I've tried to teach you, there is good corporate welfare, temporarily propping up a major American company in order to protect a large workforce, and there is bad corporate welfare: special favorable treatment for corporations that, when examined objectively, is clearly excessive, unwarranted, wasteful, or inefficient.
Any treatment for individual corporations or group of companies that is anti-competitive in nature and doesn't substantially benefit the workforce/consumers/community.
It's a pejorative term as CEOs and their lobbyists will always argue the benefits and reject the notion of 'welfare'.