That would be cruel to the people hit by a natural Desaster, people that might not be on board with this law at all.
Further it would just give the right wings nuts a reason to point to how evil Democrats are.
I instead propose to create a safety fund on the federal level that can be used to support states hit by natural Desaster. Just call it something realy obvious, like the "Climate Change Damge Mitigation Fund". Make it a requirement that states publicly announce how much money they are asking for from said fund.
More like Captain Planet