If you want to be a government in a minority Parliament, you have to work with other people.
In any crass political calculation, drilling for oil will always win more votes than putting a price on carbon. But if I recall what I was taught in fifth-grade American government class, we elect presidents to do more than crass political calculations.
America needs jobs, smaller government, less spending and a president with the courage to offer more than yet another speech.
I cannot think of any circumstances in which a government can go to war without the support of parliament.