a) Let's not be coy, I'm using the word as Cornell Law/LII and many lawyers use []. Illegal as they are here unlawfully. It's well understood in a legal context.
b) A chart does not trump law, and that chart appears to be for people older than 26, who don't need evidence they signed up for the draft. Or people who entered before 26 and have a reason why they'd be excluded. That chart isn't for evidence needed to submit to the draft, it's a way to show you didn't have to sign up.
I'm not talking about all undocumented immigrants (for instance, instances of foreign born perhaps female or otherwise draft exempt children that are born US citizens but never documented as such and enter the US without documentation), that's why I used illegal rather than undocumented which could be legal presence.
b) A chart does not trump law, and that chart appears to be for people older than 26, who don't need evidence they signed up for the draft. Or people who entered before 26 and have a reason why they'd be excluded. That chart isn't for evidence needed to submit to the draft, it's a way to show you didn't have to sign up.
I'm not talking about all undocumented immigrants (for instance, instances of foreign born perhaps female or otherwise draft exempt children that are born US citizens but never documented as such and enter the US without documentation), that's why I used illegal rather than undocumented which could be legal presence.
[] https://www.law.cornell.edu/wex/illegal_immigrant