It's not levying war against the United States. I don't know what the legal definition of Enemies is, but I would imagine it would involve a declaration of war.
The Korean war was never formally resolved, but the US hasn't declared war since WWII.
There's also no indication of adherence here.
Doing things that benefit a country and a leader that your government officically doesn't care for can be all shades of prohibited and illegal, but it's not treason.