Men (citizens and immigrants) aged 18-25 are required to register with the Selective Service. Should the US declare war, conscription could start again. The C

Men (citizens and immigrants) aged 18-25 are required to register with the Selective Service. Should the US declare war, conscription could start again. The Constitution doesn't forbid it -- to the contrary, it outlines the process to declare martial law and suspend its ordinary protections. https://www.sss.gov/ https://www.sss.gov/