Aside from the legalities of these two trying to commit funds from the taxpayers to any foreign payments without at least some sort of treaty...(revenue measures originate in the House, Constitutionally).
When those countries suffer the slings and arrows of natural (and even man-made) disasters, who is one of the firstest with the mostest to help them out?
If this sticks, I will not donate to any charity that spends a dime in any of these countries, nor to any relief efforts if they suffer disaster. That includes volcanic eruptions, earthquakes, tsunamis, and the host of nasty things that can happen that have nothing whatsoever to do with climate.