You know what else weakens you militarily and economically? Having to constantly put your resources to reacting to disasters, instead of taking measures to prevent and lessen their impact before they get here. Having to put more guards and resources to a border, because the effects of climate change will cause MORE "illegal immigration". Having to deal with the effects of more fires and hurricanes and floods.
Republicans say this shit as if there is a choice in the matter. You either get on board with what's coming and prepare for it, or wait for disaster to hit all so that you can keep your short term profits and "protect" yourself from boogiemen.
What war does the United States military need to prepare itself for, and how could that possibly be more important than securing clean water, air, and sustainable energy?