Sen. Chuck Schumer (D., N.Y.) reportedly caused a scene at a New York City restaurant on Sunday, where he was seen yelling at a wealthy and well-connected supporter of President Donald Trump, calling Trump "a liar."

Schumer was dining at Upper East Side restaurant Sette Mezzo Sunday night with friends, according to Page Six. During the dinner, Schumer encountered former secretary of health, education, and welfare under President Jimmy Carter and domestic policy adviser to President Lyndon B. Johnson, Joseph A. Califano Jr.

Califano was dining with his wife Hilary, the daughter of the founder and current chairman of CBS. Hilary voted for Trump, but her husband is a well-known Democrat.

An onlooker said that Califano complimented Schumer on what he has done with health care, and then joked about how his wife voted for Trump. Schumer then began yelling, "She voted for Trump!"

Schumer reportedly followed the couple outside, where he yelled, "How could you vote for Trump? He’s a liar!"

Hilary confirmed the incident to Page Six.

"Sen. Schumer was really rude . . . He’s our senator, and I don’t really like him. Yes, I voted for Trump. Schumer joined us outside and he told me Trump was a liar. I should have told him that Hillary Clinton was a liar, but I was so surprised I didn’t say anything," she said.

But according to a spokesman for Schumer, nothing dramatic occurred.

"[He] and his wife ate at the café on Sunday, engaging in unremarkable conversation with patrons who approached their table. There were no heated exchanges with ‎anyone."