The Court construed the other treason offense authorized by the Constitution similarly narrowly in Cramer v. United States (1945). That case involved another infamous incident in American history: the Nazi Saboteur Affair. Cramer was prosecuted for treason for allegedly helping German soldiers who had surreptitiously infiltrated American soil during World War II. In reviewing Cramer’s treason conviction, the Court explained that a person could be convicted of treason only if he or she adhered to an enemy and gave that enemy “aid and comfort.” As the Court explained: “A citizen intellectually or emotionally may favor the enemy and harbor sympathies or convictions disloyal to this country’s policy or interest, but, so long as he commits no act of aid and comfort to the enemy, there is no treason. On the other hand, a citizen may take actions which do aid and comfort the enemy—making a speech critical of the government or opposing its measures, profiteering, striking in defense plants or essential work, and the hundred other things which impair our cohesion and diminish our strength—but if there is no adherence to the enemy in this, if there is no intent to betray, there is no treason.” In other words, the Constitution requires both concrete action and an intent to betray the nation before a citizen can be convicted of treason; expressing traitorous thoughts or intentions alone does not suffice.