The parts of copyright law that Sci-Hub is violating in most countries' copyright laws are parts that have been in place at least as far back as the 19th century, long before the US was using trade pressure to try to influence anyone's copyright laws.
In fact, up until near the end of that century if anyone was using trade pressure to try to get copyright changes, it would have been other countries trying to get the US to change. The US copyright law at the time provided very little protection for foreign authors. Their works were essentially public domain in the US.
In fact, up until near the end of that century if anyone was using trade pressure to try to get copyright changes, it would have been other countries trying to get the US to change. The US copyright law at the time provided very little protection for foreign authors. Their works were essentially public domain in the US.