What was the main issue in the case US V Schenk?

The main issue in the case of Schenck v. United States (1919) was whether Charles Schenck's distribution of anti-draft leaflets during World War I constituted protected free speech under the First Amendment. The Supreme Court ruled against Schenck, stating that his actions presented a "clear and present danger" to national security and public order, thus not protected by the First Amendment during wartime. This case established a precedent for evaluating the limits of free speech in relation to public safety and national interests.