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.
Israel is also one.
I mean the country would likely need to be a signatory of the treaty governing international warrants. And then decide to honor it.
Nations can and have ignored such warrants before out of political convenience
I have a feeling if leftists fled to Russia, Russia would either kill them or hand them back to US to get rid of them.
What would stop our military from going into these countries and do a snatch and grab? A black operation that is quick and well orchestrated would bring anyone back to US soil.