The fine is awkward for Ocasio-Cortez, who took the seat of top Democratic Rep. Joe Crowley with a campaign theme of improving conditions for the working class during the November midterm elections.
Ocasio-Cortez, a self-described Democratic socialist, didn't flinch at the comment.
The campaign of Rep. Alexandria Ocasio-Cortez (D-N.Y.), a champion of progressive policies and supposed advocate of the working class, has been fined for not carrying workers' compensation coverage during a period of the campaign previous year.
"I'm sure Ms. Cortez means well, but there's nearly an outstanding rule: Don't attack your own people", Rep. Emanuel Cleaver (D-MO) said.
Now, Democratic members of Congress are saying they're done with her "sniping" at their own party and aren't sure if her career in Congress will go too well if she keeps up the criticism. The former vice-presidential nominee, who retired in 2013 after being a US Senator for 24 years, insisted that the Democrats will only be losing public support if they adopt, what he called, her "left-left" views as their own.
Meanwhile, Jessica Proud, spokeswoman for the New York State GOP, said: "Hypocrisy at its finest".
The Politico report characterized Ocasio-Cortez's chance of the committee appointment as "strong" and said other more senior legislators have sought to ingratiate themselves with the youngest woman ever to serve in Congress.
Ocasio-Cortez's plan would start applying the 70 per cent rate after the first $10 million. "She doesn't understand how the place works yet". "There's a difference between being an activist and a lawmaker in Congress".
"I think she needs to give herself an opportunity to know her colleagues and to give herself a sense of the chemistry of the body before passing judgment on anyone or anything", Rep. Yvette Clarke (D-NY) said.
A spokesman for the campaign told the New York Daily News that the campaign had nothing to say.