As Israeli Prime Minister Benjamin Netanyahu addressed Congress last week, making his case against the deal the U.S. and partner nations are negotiating over Iran’s nuclear program, Miriam Adelson — the wife of billionaire casino operator Sheldon Adelson — dropped her purple Hermes purse from the gallery onto the floor of the House, hitting the foot of a congressman.

The incident, a humorous side note to the speech, was also a helpful reminder of the not-so-subtle role some in the audience have played in promoting Netanyahu’s opposition to the current U.S.-Iran negotiations.

In the past four years, Sheldon and Miriam Adelson have emerged as the preeminent funders of the Republican Party through a network of super PACs and nonprofit groups. At the same time, they have been among the biggest funders of groups that oppose any deal with Iran over that country’s nuclear program.

Along with Adelson, there are three other donors who fund both anti-Iran groups and the Republican Party’s super PAC infrastructure: hedge fund directors Paul Singer and Seth Klarman, and Home Depot founder Bernard Marcus. These four right-wing, pro-Israel donors gave a combined $11.5 million to some of the biggest opponents of the Iran negotiations from 2011 through 2013, and pumped $115 million into Republican Party super PACs in the 2012 and 2014 elections.

– Read more: Republicans and Iran Deal Opponents Funded by Same Mega-Donors – The Huffington Post