Yeah but their oil is more costly to extract and the regions change governments like shirts compared to a stable puppet Middle East 'democratic' regime installed. It can be a very costly adventure if we have to kill too many people as dead Christians even Catholics cost way more politically than Muslims if the kill ratio gets too out of whack.
The US also doesn't want depleted uranium affected mutant babies and cancer suffers clogging up their stretched healthcare system if they go to war. Damn refugees