conservationists agree. trophy hunting can be conducted sustainably and scrupulously and can contribute to conservation. reporter: but while paying to kill brings in millions, paying to simply see the animals is worth billions. an estimated $25 billion comes into the countries in africa from nature tourism or safaris. as for that elephant dr. palmer allegedly wanted to hunt after killing cecil the lion elephant hunting is legal in zimbabwe but bringing back elephant trophies the into the united states from zimbabwe is not. alex? kelly cobiella thank you. meanwhile, a petition on the u.s. web site asks the u.s. to extradite walter palmer. it s surpassed 200,000 signatures. the white house says it will respond to any petition that collects at least 100,000 signatures. let s get go to politics. new revelations by hillary clinton and a last-ditch effort