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…The Congress shall have Power to declare the Punishment of Treason, but no Attainder of Treason shall work Corruption of Blood, or Forfeiture except during the Life of the Person attainted.
–The U.S. Constitution, Article III, Section 3–

I, _____, do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; and that I will obey the orders of the President of the United States and the orders of the officers appointed over me, according to regulations and the Uniform Code of Military Justice. 
So help me God.
–The Army Oath of Enlistment–

Russia claimed to be the Union of Soviet Socialist Republics, and so Russia really was a socialist republic. That is, communism is socialism. There is no real difference. One avowedly takes the way of terrorism and murder and anarchy, while the other seeks the same end by infiltration, propaganda, creeping socialism. So communism and Karl Marx’s socialism are really out-and-out enemies of the Bible.
–Dr. John R. Rice, False Doctrines Answered, p. 379–

Democracy is the road to socialism.
–Karl Marx–

The goal of socialism is communism.
–Vladimir Lenin–