The only U-Visas I've seen approved so far have been the following:
- Attempted rape by a serial rapist who was terrorizing the community. The victim's testimony helped the guy get caught.
- A guy victim of gang violence who was left paralyzed from the waist down due to a stray bullet.
- A whole family whose little girl died victim of an drunk driver.
- A guy who got stabbed by a mentally unbalanced homeless guy.
Usually, the lawyer I work for won't take cases like this. Though it was an attempted crime, the injuries and the mental distress weren't "substantial". A lot of people apply for these types of visas and get denied because they don't meet the threshold of what qualifies as "extreme hardship" or "substantial physical or emotional damage".