The science is rarely conclusive about anything. There is enough evidence to suggest risks from high HFCS consumption to warrant caution.
> 3) They make many varieties, some which use cane sugar instead of HFCS. 4) What does this have anything to to with the US?
The US is associated with high HFCS consumption. I would suspect that these points are related and those non-HFCS varieties are more popular outside the US.