“Private schools are overwhelmingly the domain of the wealthy”
Who attends by family income is irrelevant to any tax deduction for tuition that applies to middle class families of which there are many. It is an aid to any family, not just the wealthy. Most of my middle class family relations with kids in private schools would get the deduction and more like them would use private schools if they got the deduction.
As I said, I do not oppose the deduction as what I think is the ideal is not available - parents get the “public support” to give to any school of their choice.
The usual for such an entitlement would be for it to be means tested, which would be at least less obscene than the reverse wealth transfers that this will lead to.
But again it IMO should not be part of a federal anything. And we at least apparently can agree on this particular legislation, even if for completely differing reasons.