Just read recently that Obama has issued hundreds (over 600?) executive orders in his 5+ years v. less than 100 for Bush (only mentioning Bush for comparison since he is the most recent POTUS ... though Obama is fond of comparing things to Bush's administration). If someone can validate the #s, feel free.
EPA is already known for pushing the envelope on expanding its tentacles of power. This seems a blank check for just about anything they want to do.