Cannon Ball Man Listed on Sex Offender Registry
CANNON BALL, N.D. (trfnews.i234.me) — Robin Lee Iron Shield is listed in sex offender registration records.
Records provided for this report list Cannon Ball as Iron Shield’s community of residence.
The records list his most recent verification date as March 24, 2026.
They identify his registration classification as Tier 1.
TRF News is not publishing Iron Shield’s exact street address.
Federal Conviction
Iron Shield was convicted in federal court of sexual abuse of a minor.
The conviction was entered under 18 U.S.C. § 2243(a).
The listed conviction date is June 13, 2011.
A federal appeals court later reviewed the case.
The Eighth Circuit Court of Appeals decision says the victim was 13 years old.
Iron Shield challenged the handling of his trial and the evidence supporting his conviction.
The appeals court rejected those arguments.
The court affirmed his conviction in March 2012.

Federal Law
Section 2243 covers sexual abuse of a minor or ward under federal law.
The statute applies to certain conduct involving minors within federal jurisdiction.
Readers can review 18 U.S.C. § 2243 through the U.S. House.
Section 2243 is different from the federal aggravated sexual abuse statute.
That separate offense appears under 18 U.S.C. § 2241.
Standing Rock Registry
Cannon Ball is within the Standing Rock Sioux Reservation in North Dakota.
The Standing Rock Sioux Tribe maintains a public sex offender registry.
North Dakota directs residents to tribal registries for people registered with tribal agencies.
Readers can visit the Standing Rock Public Sex Offender Registry.
North Dakota also provides state sex offender information and resources.
Registry records can change after new information is reported.
Readers should use official sources for the latest registration information.
This story summarizes public registration records and federal court information.
It makes no allegations beyond the documented conviction.
I’m Adrian Cole reporting for TRF News.
Copyright 2026 TRF News. All rights reserved.