William McKinley (1897-1901) is deemed the least green president, working to expand America's influence around the world by annexing Hawaii, the Philippines, Puerto Rico and Guam and setting up a protectorate over Cuba. Resource extraction and development as well as cultural and political dominance followed.
Every coin has a flip side. So, yesterday's list of the greenest presidents wouldn't really be complete without this one: the baddies. See the entire list of the nine least green presidents on The Daily Green.