"There's some irony in the fact the Supreme Court was discussing this very topic just yesterday." - Redbob
Are you referring to registering with the Selective Service System? Males ages 18 thru 25 living in the U.S. are required to register, regardless of citizenship status.
I'm interested what the Supreme Court was discussing...
I’m referring to the fact that Congress unilaterally declared, generally speaking, all males age 17-45 part of the US militia.
There are times when, having been tasked with defending one’s country, one must act on that duty without sitting around waiting for orders.