The US Fish and Wildlife Service doesn't allow polar bear hunting in the US but does issue permits to hunt them as trophies in Canada. How sick is that! Almost 250 such permits have been issued in the last few years.
http://www.thepetitionsite.com/takeaction/432024587
It also can't hurt to contact your Congresscritter.
http://www.house.gov/writerep/ (Rep.)
http://www.senate.gov/general/contact_information/senators_cfm.cfm (Sen.)