Long story short, investing in renewable energy might have some tax benefits for Apple, but I don't think it has much (if anything) to do with repatriating overseas cash.
Long story short, investing in renewable energy might have some tax benefits for Apple, but I don't think it has much (if anything) to do with repatriating overseas cash.
If it is effectively a criminal fine, no, that would still be an ex post facto law; the Supreme Court has struck down at least one retroactive federal tax on that ground [0]. And, more commonly, retroactive tax increases have been invalidated on other grounds (mostly, substantive due process under the 5th, or for state action 14th, amendment.)
[0] But note that sneaking in what is effectively a criminal penalty as a tax is also unconstitutional if it isn't retroactive, since it will still violate a host of other Constitutional protections applicable to criminal punishment, so any tax struck down as ex post facto would necessarily be struck down even if it applied only to future “taxable” events.
And I see an essay about the law calling wealth taxes unconstitutional but that doesn't seem to be consensus.