I see that the Climate Change Conference in Paris has decided that the "developed" countries will contribute $100 billion to the "undeveloped" countries to help them mitigate their expenses lowering their carbon emissions. At least I think that is the rationale. A couple of points:

How can unelected bureaucrats commit the U.S. to pay out billions of dollars? Doesn't Congress have anything to say about this?

What percentage of the $100 billion will do anything useful vs. the percentage that will go to graft and corruption?

Why can't we use that money to put solar panels on our own roofs? Or build up our own renewable energy sources?