Will the US GOFA this, anyway?
I have a feeling that even if this is passed in the US, it will be heavily cut down or selectively applied. As we have seen, US corporations make good money in some of these countries, and attempts to curtail or complicate such things tend to meet with resistance. Also, the US often has extremely good relations with oppressive and authoritarian governments - the only thing it can't get on with is "communism" (i.e. limits on private ownership, permitting trade unions, etc.) or trade protectionism that disadvantages the US. Anything that gets in their way, in other words. Friendly governments get their support - in whatever they want to do - usually for a price.
Historically, the US has regularly condemned human rights abuses in Russia, China, Cuba, Vietnam and so forth, but were rather less vocal about the human rights abuses in Iran under the Shah, Chile under Pinochet, Nicaragua under Somoza, or Guatemala under the United Fruit Company. Come to that, Saddam Hussein escaped official criticism while he was a bulwark against radical Islam, and Manuel Noriega was only called to account when he stopped obeying orders.
Skimming through the wording of the legislation, it looks like there will be substantial wriggle room, not to mention the almighty blind eye. It just doesn't seem likely that the US will force its large, successful corporations to risk profit-damaging censure in any foreign country, let alone force them to aid criticism of friendly nations in the face of such censure.