WaPo fact-checker fires back at Ocasio-Cortez criticism over rating: 'She's wrong'

Washington Post fact-checker Glenn Kessler is defending a "three-Pinocchio" rating given to Rep. Alexandria Ocasio-CortezAlexandria Ocasio-CortezThe Memo: Impeachment dominates final Iowa sprint 'The worst news': Political world mourns loss of Kobe Bryant Biden leads 2020 pack in congressional endorsements MORE (D-N.Y.) over her comments regarding minimum wage earners.
An article by Kessler published on Thursday had assigned three "Pinocchios" to Ocasio-Cortez over a comment made by the freshman congresswoman saying that "a vast majority of the country doesn't make a living wage" during an interview with Ta-Nehisi Coates. 
Ocasio-Cortez also said that "it’s wrong that corporations like Walmart and Amazon can get paid by the government, essentially experience a wealth transfer from the public, for paying people less than a minimum wage."
Kessler in his article disputed that "a vast majority of the country" was not making a living wage, while also noting that Walmart and Amazon pay more than the minimum wage.
Ocasio-Cortez took issue with Kessler's rating, questioning whether he should use a "Walmart-funded think tank as reference material for wage fairness."
"That’s like citing the foxes to fact-check the hens. Here’s 4 Geppettos for your contested Pinocchios," Ocasio-Cortez said on Twitter on Thursday.
Kessler, the Post's fact-checker since 2011, fired back at the congresswoman about the study used, saying it had been by Jason FurmanJason FurmanTrillion-dollar deficits as far as the eye can see, and hardly a voice of caution to be heard Billionaires paid lower tax rate than working class for first time in US history: study Economy adds 130K jobs in August, falling below expectations MORE, who served as Chairman of the Council of Economic Advisers during the Obama administration. 
"Since @AOC accused The Fact Checker of relying on a Walmart-funded think tank paper when we fact-checked her, we need to set the record straight," Kessler tweeted Friday morning. "She's wrong. Don't always believe what you see on Twitter. The article has been updated with a note explaining the provenance."

The squabble comes almost three weeks after Ocasio-Cortez called into question "the standard of who gets fact-checked" and "how often" by fact-checkers, arguing that she was getting singled out for fact-checking despite just taking office. 

"Facts are facts, America. We should care about getting things right. Yet standards of who gets fact-checked, how often [and] why are unclear," Ocasio-Cortez wrote to her more than 2.1 million followers while sharing an opinion piece from Fair.org that was also published by Salon.

"This is where false equivalency [and] bias creeps in, allowing climate deniers to be put on par w/scientists, for example," she added. 

Ocasio-Cortez in December said that "accounting errors" totaling $21 trillion at the Pentagon could have paid for about two-thirds of the cost of a "Medicare for all" bill. 
The Post called it a "flawed comparison" because "the two numbers are not apples-to-apples to begin with."