Donald Trump cannot act as a dictator and throw the power of the presidency around. It doesn't work that way. 

Senator Bernie Sanders does not have a problem with the idea of limiting military contracts to preserve American jobs, but, to simply end treaties takes Congress and quite frankly American jobs at the expense of the Ozone Layer will not be effective. If Earth's ozone layer is not protected, the USA could have $100,000 per year jobs but the people won't benefit from them long enough to make it a moral decision. 

People on Earth cannot live without an ozone layer. That is not negotiable.