TW: Suicide. Unnamed Trans veteran draped themselves in a trans flag, and committed suicide at a VA hospital. Only the local news seems to be saying anything.

It is a crime in many US states. If you find yourself hospitalized after a suicide attempt, you will be guarded around the clock until you’re well enough to be moved to a state psychiatric facility. You remain property of the state until release from said facility. You may petition the court to prove that you are stable enough for release, but you’ll likely be released before you see a judge.

Source: personal experience

Iirc the phrase is based in religious thought that suicide is a sin or crime against God. Committing suicide or having committed suicide are commonly used, in USA English anyway.

The term commonly accepted today is died by suicide. It takes into account that suicide is commonly tied to underlying mental health challenges and isn't necessarily a choice the victim made, but rather a lethal symptom of those mental health conditions.