"Often, the method of death imposed was also particularly macabre. Traitors were rarely simply hung — they could anticipate being drawn and quartered or tarred and feathered, and gibbeted as an object lesson. Gibbeting refers to the public display of a criminal, alive or dead, usually with a sign detailing his or her crimes. Individuals were hung along roadways and at the entries to towns, so that travelers would constantly be reminded of the punishments in store for serious crimes. Many gibbets were left until the body had decayed entirely, and the family of the criminal was not permitted to bury the deceased in holy ground.
In the modern era, most nations punish the traitor alone, with a sentence of death for serious acts of treason in nations with the death penalty. Lesser acts merit a jail sentence, usually for a minimum of five years, and a heavy fine: in the United States, the fine is $10,000 US Dollars."
https://www.wisegeek.com/what-are-the-penalties-for-treason.htm