Now playing Next USA Big Brother? Government demands for private Facebook data on the rise 06/11/2014
Now playing Next USA High on the agenda: marijuana a key issue in 2014 US Midterm elections 03/11/2014
Now playing Next USA Video: Chelsea Clinton presents baby Charlotte alongside proud grandparents Bill and Hillary 30/09/2014
Now playing Next USA Video: Police to probe claims its officers pushed over pregnant woman 25/09/2014
Now playing Next world news Carbon emissions - how does Europe compare with the rest of the world? 23/09/2014