Neil Young performs at the BottleRock Napa Valley Music Festival at Napa Valley Expo on May 25, 2019, in Napa, Calif. Neil Young says his marijuana use has cast a cloud over his application to become a dual citizen in the United States. The legendary singer-songwriter and proud Canadian says in a statement on his website that he recently applied for American citizenship so he could vote in the 2020 presidential election. THE CANADIAN PRESS/AP, Invision - Amy Harris