“The SALT cap was a "dirty compromise" last year for Republicans in an effort to diminish the deficit during their "once-in-a-generation opportunity for major tax reform," Graeme Boushey, associate professor of political science at University of California at Irvine, told CBS News.
Boushey said this was a "very hard vote" for congressional members in wealthy districts, like Rep. Mimi Walters, R-California, who felt pressure to support this GOP promise.
Democrat Katie Porter, who is challenging Walters to represent the wealthy suburban district, tries to squeeze the congresswoman for voting along with her party.
Porter told CNBC in a September digital debate, "...other Republicans in Orange County in Congress...all voted "no" on Trump's tax plan because they knew it punished California families and would create a financial shock at people's pocketbooks in 2019."
From CBS News, 10/16/18