They have no extradition treaty with the United States.

Russia

Zimbabwe

Venezuela

Switzerland

Iceland

Nicaragua

Bolivia

Cuba

Ecuador

China

Afghanistan

Belarus

Iran

Laos

Libya

Mongolia

Montenegro

Nepal

North Korea

Qatar

Yemen

But I think anyone who flees could still be arrested if they travel outside of these countries if there's an international arrest warrant for them and be brought back to the U.S. for trial.

Just a little trivia to know in case somebody tries to avoid a knock on their mansion door at 4AM.