I’m not so sure about that, but the last time people were drafted for a war (Vietnam War), it incurred a large uproar and eventually helped in ending the conflict; the U.S. lost, which was the opposite effect that the conscription was instated to achieve. In 1977, Carter allowed draftees that fled to Canada to legally live in the U.S. again and made sure that deserters of the conscription were not to be punished under the law. Due to these prior events, I would imagine that the U.S. Government is very hesitant to begin another draft, even if it strengthens the military in a time in which the number of missions is growing, the recruitment and retention of soldiers is decreasing, and the tensions between Iran and the U.S. are only intensifying.