In the United States, there are both federal and state laws prohibiting treason. ... They can therefore potentially commit treason against either, or against both. At least fourteen people have been charged with treason against various states; at least six were convicted, five of whom were executed.

Is treason still a crime in the US?

Federal Law

Treason is the only crime defined in the U.S. Constitution. ... Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort.

Is the Treason Act still in force?

The Act was last used to prosecute William Joyce in 1945 for collaborating with Germany in World War II. The Act is still in force in the United Kingdom. It is also still in force in some former British colonies, including New South Wales.