well, the dems can show VIDEO of romney with 2 different positions.
Can the repubs prove obama is lying with the BLS numbers?
I don't think lying is exactly whats going on. Technically speaking, the BLS numbers aren't lying, it's just that the data that makes up those numbers isn't indicative of the ACTUAL UE.... Its a way to make things look better to the public than they really are.
Again, like "fact checkers", and the "federal" reserve, you stick a tag on it like "UE numbers", and people take it at face value, they don't actually look at what data makes up those numbers.