Maybe not, but the USA have invaded countries that also didn't ratify human rights conventions and executed people as war criminals for human rights violations. So the USA seem to think they do apply. Human rights are generally thought to apply universally, not only in countries that agree.
Those US invasions were usually illegal under international law, contained the US committing war crimes and not being punished, and led to the US passing a law allowing "all means necessary" to bring about the release of anyone associated with the US government being held by a country/group at request of the ICC.
Human rights have never applied universally, the lack of any Nuremberg trial against the Allies made that clear.
