Depending on where you want to draw the line, there are over a dozen presbyterian denominations in this country, admittedly, most are not 'major'. The story deals with the largest, leftwing PCUSA.
The second largest, PCA, has not adopted a position paper on Israel. There may have been an overture adopted at some point, but that denomination tends to try to stick to moral issues, rather than political ones.
Thank you both. With so many denominations in the country, it can be hard to tell the players without a scorecard.