That doesn't mean that Mark doesn't deserve a second chance at life. But it does mean that, for the first while at least, you are ill-advised to give him the keys to the room where the cookies are kept.
For his entire life? Even if he was a teenager or young? Doesn't american society even consider something as simple as possibility of changing your behaviour in 60+ years of life?
I mean... half of my most successful highschoolmates, leading great companies and organizations, would be untrustworthy and unemployable by American logic since they smoked a bit of pot and got caught for it.
Same thing and op's point of view and yours
With the current US system those both things will punish you for the whole life, even if you grow out of it. Even if its petty theft. Or large theft. Or a bit of pot. Or selling pot. Social media and background checks will damage your future prospects forever for a minor thing that doesn't make a difference in other societies.
You say you disagree, but even the parent suggests as much: "But it does mean that, for the first while at least,"
That's what I take their meaning as. That after you commit a crime, you have to prove yourself again, and that takes time. It's why you suggest 30s, and not 18. For a while after their crime, it would make sense to exclude someone.
On top of that, why so late? Why are you forcing your view that 30s is the earliest someone can trust someone again? Why not 18? Why can't a citizen decide to trust someone earlier than some arbitrary number?
You are confused about what the word "axiomatically" means. If this is an axiom, your system is easily proved inconsistent with reality. Person A is known to have stolen a cookie from the cookie jar when she was three. Person B, who has never stolen a cookie, brandishes a weapon and says "I intend to steal your cookies, so choose: your cookies or your life." Under your axioms, every person must trust person B more than person A with respect to whether they will steal your cookies.
Your argument is probabilistic, not axiomatic. There's a huge difference.
In most states (and the feds), evidence of prior bad acts is not able to be used this way.
"(1) Prohibited Uses. Evidence of a crime, wrong, or other act is not admissible to prove a person’s character in order to show that on a particular occasion the person acted in accordance with the character."
Not at all the same thing. Actions have consequences, and we can't force companies to hire people they see as unsafe.
[1] https://www.archives.gov/eeo/terminology.html
"Protected Class: The groups protected from the employment discrimination by law. These groups include men and women on the basis of sex; any group which shares a common race, religion, color, or national origin; people over 40; and people with physical or mental handicaps. Every U.S. citizen is a member of some protected class, and is entitled to the benefits of EEO law. However, the EEO laws were passed to correct a history of unfavorable treatment of women and minority group members."
Additionally selected enforcement of laws has turned criminal convictions into a way to get rid of a statistically higher rate of minorities without saying that's why you are doing it. If I recall correctly that is the main reason that Massachusetts banned asking for criminal history on applications
Where do you think this protected class came from?
That doesn't mean we have to provide them with the means to do it. No public information, no option to see someone unsafe because of that information.