So why does he need to pick a guy who's ideology is diametrically the opposite?
Trump’s in charge.
Trump says he’ll cancel the Paris climate deal
http://www.bbc.com/news/election-us-2016-36401174
He’ll said he was going to get out of that Paris climate deal and Trump assigned a global warming skeptic to head the EPA who will get the EPA off of U.S. businesses
Maybe you think Hillary was a better choice who was going to open the border and let into the USA a few billion 3rd world people and Muslims ?
Pssst....The guy he picked to run the EPA is one of the biggest skeptics of global warming in the nation, Scott Pruitt.
Pruitt, not Tillerson, will be in charge of dealing with EPA regulations. The SOS will have nothing to do with environmental policy.