A hero is someone who is willing to give up their own interests for the interests of others.
The President is required under the U.S. Constitution to enforce the law. President Obama has refused to allow any Bush administration official who sanctioned and directed the use of torture (a war crime under the Geneva Convention) to be held legally accountable. Apparently, the president finds it more offensive to expose war crimes than to commit them. Otherwise, Dick Cheney would be facing life in prison rather than Bradley Manning.