As part of the International Megan’s Law, the US Marshals Service has been notifying receiving countries when a registrant is traveling. You can imagine how the immigration officials in a country you are traveling to will react when they receive a warning from the US Marshals that you are arriving.
Travelers have been intercepted upon arrival, interrogated and turned back on the next flight. In most cases, they are denied entry, unable to attend to business, visit family, attend a loved one’s wedding ceremony or simply see the world. The effects of IML have been devastating.
But is it possible that the US Marshals service has a complaint form where you can tell them about your ruined travel plans?!? A link on their site indicates they do: https://www.usmarshals.gov/sex-offender-complaint-form.html
Why? What are they going to do with this? Use it for entertainment? Send thank you notes to countries who reject registrants? I’m skeptical.