Freshman Rep. Alexandria Ocasio-Cortez got into a heated exchange with a GOP congressman from Wisconsin after he called the Green New Deal “elitist” during a committee hearing Monday.

Ocasio-Cortez invoked her experience as a waitress while mentioning the water in Flint, Michigan, and flooding in the Midwest after GOP Rep. Sean Duffy mocked her ambitious plan.

“People are dying. They are dying,” she exclaimed. “And the response across the other side of the aisle is to introduce an amendment five minutes before a hearing.”

During the Financial Services Committee hearing, Duffy introduced an amendment to a homelessness bill that would impose “green” standards on the measure.

Duffy introduced the amendment to vote against it — and spark debate about the legislation that Ocasio-Cortez has been championing.

“The Green New Deal is one that if you are a rich liberal from maybe New York or California, it sounds great because you can afford to retrofit your home or build a new home that has a zero emissions, that is energy-efficient, affordable and safe,” Duffy seethed during the hearing.

He added that the US Department of Housing and Urban Development did a study that found that to retrofit all their existing houses to meet the Green New Deal’s standards, it would cost up to $172 billion.

“It’s outrageous. It’s absolutely outrageous,” Duffy said.

He then yielded the floor to Ocasio-Cortez, who responded with an impassioned call to address climate change — which she said was far from an “elitist issue.”

“You want to tell people that their concern and their desire for clean air and clean water is elitist, tell that to the kids in the South Bronx which is suffering from the highest rates of childhood asthma in the country,” she said.

“Tell that to the families in Flint, whose kids have their blood ascending in lead levels,” she added. “Their brains are damaged for the rest of their lives. Call them elitist.”

She then questioned Duffy’s tactic of introducing the amendment, but agreed the committee should hold hearings on how climate change affects homelessness in the United States.

“I welcome the sudden enthusiasm to address the climate, and in that spirit I want to reach my hand across the aisle and say ‘Let’s do a hearing,’” she added at the end of her response.

The debate took place after a Senate procedural vote that failed to advance the Green New Deal in that chamber.

The measure, introduced by Senate Majority Leader Mitch McConnell (R-Ky.), was doomed to fail and was dismissed by Ocasio-Cortez as a “stunt.”