Coal stocks have been bludgeoned again this week, after President Obama gave little indication he was going to give the industry leeway in new environmental regulations. Arch Coal (NYSE: ACI), Alpha Natural Resources (NYSE: ANR), and Peabody Energy (OTC:BTUU.Q) are all facing long-term challenges finding demand for thermal coal, and they're not dissipating any time soon. In the following video, Fool contributor Travis Hoium covers why he thinks coal stocks are a bad buy.