Land mines and PSAs

I just read that a Land Mine Action advocacy group associated with the UN can't get their PSA played on any network. You can read more about it here and see more about the campaign on StopLandmines.org.

This is a vital (and workable) issue. How come we as Americans refuse to come to terms with that? Our leaders won't sign a landmine treaty, we stick to the belief that landmines are needed (who knows why?!?), and even house companies that produce landmine components.

How many innocent children have to die or lose limbs until Americans give up and sign?