Does this marking only apply to US media or media active in the US? Swiss public broadcasting such as @SRF is publicly funden but lack suck label. However you

Does this marking only apply to US media or media active in the US? Swiss public broadcasting such as @SRF is publicly funden but lack suck label. However you would have a very hard time finding someone in Switzerland that does not know this as there is constant debating about the fee which almost everyone has to pay separately from taxes. German public television is also not marked.