I'd say the overall image of USA here is positive. Your country represent a powerful force for democracy in the world. However, the constant warfare in the Middle East is viewed as problematic. A large portion of us also think the unilateral and seemingly unconditional support of Israel is fueling unrest in the region.
The fact that your country denies the human impact on the climate is viewed as utterly ridiculous and an effect of the strong economic interests controlling your political system.