Unfortunately some states (eg: Texas) don't allow you to expunge a felony no matter how long ago it was. My sister-in-law's HS boyfriend was a criminal jerk and she got caught up and charged as an accessory for something stupid (theft IIRC). She fully admits she was rebelling by going after a bad-boy. She had a public defender who met with her once and told her to take the deal to get probation. Unfortunately the plea was for a felony.
It's been 20 years, she's married to a good guy and has a baby... yet that black mark still comes up on her record.
Arizona, too, and you’ll find that’s common in tough-on-crime red states. I can petition to have mine “set aside,” but it sticks. I’m fortunate enough to have a great career in the Valley, but it comes up all the time as the upthread comment pointed out.
We are looking into gubernatorial pardon (Arizona has a decent process) but not holding my breath.
This is a pretty common American attitude found in many "non red" states as well: As soon as someone commits a crime--any crime and just once--they become a criminal. It's as if their species permanently changed from human to something else. They're not a human that made a bad decision, they are an "other". Since this new thing they have become is not human, all kinds of inhumane and terrible things can be done to them and justified, including permanent removal of rights, brutalization and rape in prison, permanent loss of employability and access to normal livelihood. All of these things are seen as OK because it's a criminal we're talking about, not an actual person.
The US criminal justice system focuses on punishment and not reform, "the box" on employment applications makes this patently obvious as does the removal of voting rights for felons. All of this stems from exactly what you mentioned, once convicted you are a criminal, that label follows you and there's little you can do to get rid of it.
The first step to improving any of this is changing deeply held beliefs by our society, and many days it feels like an impossible task.
It's been 20 years, she's married to a good guy and has a baby... yet that black mark still comes up on her record.