This is bogus, a play on words, and nothing of substance.
See below: source: https://money.stackexchange.com/questions/91824/tax-reform-bill-is-a-section-11042-consumer-rebate-o...
Section 11042 of H.R. 1, the 2017 tax bill, is titled:
SEC. 11042. LIMITATION ON DEDUCTION FOR STATE AND LOCAL, ETC. TAXES.
If you read the language of that section, that is indeed the section that limits the SALT deduction, a provision that was subject to much political debate. Before enactment of HR 1, you could fully deduct your paid state and local income taxes. This provision limits that amount for tax years after 2017 and before 2026 to $10,000.
So the claim is "legit" in the sense that if you are at the top marginal tax rate and you itemize your deductions and you paid $10,000 or more in state or local taxes, your tax bill will be $3,700 lower in 2018 than it would be without 26 USC 164 (which Section 11042 modifies).
However, it is entirely bogus because that section of the 2017 tax bill does not provide any new benefit at all, like the copy explicitly states (it is in fact limiting an existing benefit) and because that provision does not even apply to tax year 2017 anyway. If you were already benefiting from "this section" you will continue to benefit (albeit to a lesser extent). If you were not already benefiting, you will continue to not benefit.
