Superheroics and the law
Registration laws aren’t the only laws created because of, or influenced by, the existence of superhumans. Since 1938, United States law has adapted
to reflect the realities of a world with superheroes and villains; many other countries with a significant superhuman presence have passed similar laws.
Most of the material that follows references the Untied States specifically. Unless otherwise stated the laws and procedures are essentially the same for the rest of the world for one of two reasons;
Simplicity. For Rp purposes it's easier to use these guidelines as the default. In fact, if a world nation deviates from this 'norm' it's probably worse. Little material in the Champion PnP cannon changes from this [I will update this as I find differences]. Also in some key cases; android rights for instance, if there were compelling differences, say full recognition in this case, heroes dealing with that issue would move there. This would be inconvenience story wise.
Pseudo Precedent- For various reasons the US has the most exposure to metahumans, both in terms of time, variety and sheer population. As a result, the US reaction for good or ill is seen as the standard. The rest of the world essential lets the US be the test case for just about everything metahuman related.