Ilhan Omar, one of the first two Muslim women in the US Congress, "unequivocally" apologised Monday after suggesting US support for Israel is fueled by money from a pro-Israel lobby group.
The Minnesota freshman has faced criticism for weeks over her positions on the Jewish state, but it boiled over late Sunday after she reacted to a Republican critic in a tweet.
"It's all about the Benjamins baby," Omar replied, referring to American $100 bills featuring the likeness of Benjamin Franklin.
When a user asked who Omar believes is paying US politicians to support Israel, the former Somali refugee tweeted a one-word response -- "AIPAC!" -- referring to the American Israel Public Affairs Committee.
The exchanges triggered an uproar, with House Speaker Nancy Pelosi castigating Omar and demanding an "immediate" apology for using "anti-Semitic tropes" in her tweet, and several Democrats and Republicans assailing their colleague for her language.
Omar obliged, issuing a statement acknowledging that anti-Semitism is "real" and expressing gratitude to colleagues "who are educating me on the painful history of anti-Semitic tropes."