There is the short term reality that we are dependent on gas and oil and, decreasingly, coal. The difference between the two parties is the long term vision.

Dems want to have international treaties to address the problem and are willing to spend money to move away from fossil fuels. Republicans downplay the science (or outright deny it) and think international treaties make the US less independent and therefore weaker, and they would much rather cut taxes for Elon Musk than spend money on energy infrastructure.