The changes start with tax years beginning after this law passed
What the document says“The amendments made by this section shall apply to taxable years beginning after the date of enactment of this Act.”
The section applies its amendments to taxable years beginning after the date of enactment.
What the document actually says“The amendments made by this section shall apply to taxable years beginning after the date of enactment of this Act.”
That sentence, in plain words
The changes start with tax years that begin after this law passed. Older years are left out.
What this is about
The old rules still hold for them. The date is the day this law passed. It is fixed in the law.
No action is recorded against this proposal. That is not evidence that none has been taken, and nobody has yet read it against the record. See what the tracker does not yet cover.