https://scholarship.law.georgetown.edu/cgi/viewcontent.cgi?a...
Applying Nigerian law to people who aren't citizens of Nigeria would rightfully be questioned. The USA is not exempt from that. Just because it's illegal in the USA doesn't make it illegal everywhere
You'll get 100% agreement from me on that, and for example I think the ongoing promulgation of global US jurisdiction using USD as a wedge is a travesty.
But we're discussing human rights and restrictions on government, not what the US has declared illegal for US persons being applied to non-US persons. We're really talking about applying US law to the US government, operating abroad.
But we should hold our governments to the standards they are purportedly founded on, rather than buying into the justifications that they themselves have created. The opportunities to concretely do this are rare, but extradition trials being judged by a different government are one of those places.
The Declaration of Independence went further, "We hold these truths to be self-evident, that all men are created equal; that they are endowed by their Creator with inherent and inalienable rights; that among these, are life, liberty, and the pursuit of happiness"
However, no legal guarantees of rights are made in the declaration.