So bizarre. The US defense department even says that climate change is one of the largest threats to US security. So, basically the Trump administration is pure politics.
Every administration's positions and policies reflect their politics, and their donor base. This one isn't different in that way.
This particular administration's positions represent the interests of the fossil fuel extraction industry, whether via the appointment of fossil fuel industry executives to positions of authority over environmental policy, or in the leniency by the administration toward particular authoritarian petro states like Saudi Arabia and Russia.