Car Commissar Obama Imposes Fuel Rules By Fiat

Obama continues to demonstrate that he believes he is the CEO of Amerika, Inc.

Mr. Obama plans to announce on Friday that he is ordering the creation of a new national policy that will result in less greenhouse-gas pollution from medium- and heavy-duty trucks for the first time and will further reduce exhaust from cars and light-duty trucks beyond the requirements he has already put in place.
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Under rules that were eventually formalized last month, new cars have to meet a combined city and highway fuel economy average of 35.5 miles per gallon by 2016. The administration said the new rules would cut emissions of carbon dioxide and other heat-trapping gases by about 30 percent from 2012 to 2016.
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In addition to the fuel efficiency and pollution standards, Mr. Obama’s directive will order more federal support for the development of new-generation cars like advanced electric vehicles and will instruct the Environmental Protection Agency to reduce pollutants from motor vehicles other than greenhouse gases.

What I can't figure out is why in the world this is even legal. Maybe someone in the audience can enlighten me why, even in our era of largely ignoring the Constitution, the head of the Executive Branch can simply write an Executive Order and dictate mileage thresholds.