US Democratic Congresswoman Rashida Tlaib, who has faced accusation of antisemitism and is known as a fierce critic of Israel, was strongly criticized for the tweet.
Tlaib was wearing the shirt, which depicts the whole of Israel as Palestine, while promoting Linda Sarsour's new book.
Over 9,000 Americans have signed a petition calling on 120 members who recently wrote letters of support to CAIR to renounce their backing, arguing that they cannot also be against racism.
"This political stunt gets us no closer to peace or justice. As a member of Congress, I consider it a non-starter," tweeted Tlaib.
There are plenty of reasons why I — and many other feminists — question the relevancy of the 2020 Women’s March that have nothing to do with antisemitism or anti-Zionism.
In a statement, CAMERA slammed the inclusion of Sarsour on the list, and accused Elle's editors of publishing a piece without thoroughly vetting it.
Equating Zionism with white supremacy and implying that American Zionists (the vast majority of Jews) are complicit in supporting a racist state is antisemitic.
"He is no longer with the campaign and we wish him the best," Mike Casca, a campaign spokesman, told CNN.
This was far from the only controversial comment about Israel made at the event.
Speaking Friday at the annual conference of American Muslims for Palestine in Chicago, Sarsour had criticized progressive Zionists.