The Center for American Progress was urging the Obama administration to eliminate those tax deductions[1]. Politifact fact-checked a Pelosi claim, and came to the same conclusion, that the SALT deudction "is a tax deduction that disproportionately benefits higher-income taxpayers[2]". Only 10% of filers earning under $50k a year even bother claiming the deduction[3][4].
[1] - https://www.americanprogress.org/issues/general/news/2011/02...
[2] - http://www.politifact.com/truth-o-meter/statements/2017/oct/...
[3] - https://www.urban.org/research/publication/repeal-state-and-...
[4] - https://www.brookings.edu/blog/fixgov/2017/12/20/the-only-go...