It may generally be called treason by some people, but in the US the definition of the crime of treason is specifically constrained to avoid abuses.
>Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort. No Person shall be convicted of Treason unless on the Testimony of two Witnesses to the same overt Act, or on Confession in open Court.