Minnesota congresswoman Ilhan Omar was attacked with an unknown substance at a town hall meeting on Tuesday in a shocking attack caught on video.
Omar, who has been a frequent target of political insults from President Donald Trump, appeared uninjured and continued to speak after the assault.
"I'm ok. I'm a survivor so this small agitator isn't going to intimidate me from doing my work. I don't let bullies win," she later wrote on X.
Video footage shows a man charging at the US lawmaker at the lectern and spraying a stream of liquid at her. A security official grabbed him and took him to the ground.
Omar took a few steps toward the man with her hand raised before he was subdued and she continued her presentation after a brief break.
Police said they arrested the man for third-degree assault.
In her remarks, Omar was criticising ICE and Department of Homeland Security Secretary Kristi Noem, demanding that Noem resign after the recent shooting deaths of two US citizens in Minneapolis during Trump's immigration enforcement surge.
"ICE cannot be reformed, it cannot be rehabilitated, we must abolish ICE for good, and DHS Secretary Kristi Noem must resign or face impeachment," Omar said, to applause.
The man then charged at her and sprayed the liquid at her before saying: "You must resign."
Omar has frequently come under political attack from Trump, who once called her "garbage."
During a speech in Iowa on Tuesday, Trump said Omar did not love the United States.
"They have to show that they can love our country, they have to be proud," Trump said when talking about immigrants. "Not like Ilhan Omar," he added.
