No, as long as one doesn't discuss them with anyone capable of making their thoughts public.
way back when...it used to be death by hangin....even now i think they receive the death penalty and do hard time in a federal prison.
In law, treason is the crime that covers some of the more serious acts of disloyalty to one's sovereign or nation. Historically, treason also covered the murder of specific social superiors, such as...
The government must present testimony of at least two witnesses to the same treasonous act or secure a confession in open court.
they can be sent to jail, or have there citizenship taken away.