I winced a bit at the claim of being a stateless person, as I'd previously understood that to mean lacking citizenship anywhere, not being without a passport for travel. Perhaps I've been wrong about that all these years.
I'm still researching, but so far, I've found the following passport-revocation authorities:
1. Obtained illegally or through fraud
2. Altered or misused (no definition yet on 'misused')
3. Issued to persons whose citizenship is cancelled
4. Non-payment of child support
5. Non-repayment of repatriation loan
6. Persons convicted of sex tourism
7. Persons convicted of drug trafficking
8. [based on comment below] Standing warrants for arrest (and other standing legal/court orders against the bearer)
Interestingly enough, 22 USC § 2721 states that:
> A passport may not be denied issuance, revoked, restricted, or otherwise limited because of any speech, activity, belief, affiliation, or membership, within or outside the United States, which, if held or conducted within the United States, would be protected by the first amendment to the Constitution of the United States.
I've yet to find an authority to revoke a passport from a citizen who is openly seeking political asylum.
However, there is 22 USC § 217a:
>A passport shall be valid for a period of ten years from the date of issue, except that the Secretary of State may limit the validity of a passport to a period of less than ten years in an individual case or on a general basis pursuant to regulation.
So, there's that. Perhaps this is one such individual case.
Additionally, the law requires the DOS to send the passport owner written notification of revocation. I wonder if the US is considering a press statement to be such written notice?
Any lawyers versed in passport issues know whether revoking a passport in a situation like this runs afoul of law or established precedent?
[edit: formatting failure on my part]