u.s. had entered world war i, the supreme court heard oral argument in argo versus united states, known as the selective draft law cases. the case is challenged the selective service act of 1917. one month later, the supreme court unanimously upheld that conscription is constitutional. historian christopher capozzola, you"r of "uncle sam wants examines how the selective affected men and women during and after the war. supreme court justice elana kagan introduces him. the supreme court historical society hosted this 40 minute event. mr. joseph: good evening, ladies and gentlemen. i am greg joseph, chair of the board of trustees of the historical society. and welcome to our third lecture this year in the leon silverman series. professor capozzola is going to be speaking about the selective draft law cases in a lecture that he titles "body and soul," and you will understand that afterwards. let me begin by asking everybody to turn off their cell phones, not just put them on mute. it will affect the sound system. and that includes your fancy watches that are really cell phones. i want tgi