Congresswoman-elect Alexandria Ocasio-Cortez fired back at Donald Trump Jr. on Friday after he shared a meme targeting her on Instagram.

The post shared on Thursday by Trump Jr. showed a split image of Ocasio-Cortez and his father, President Trump.

Below her photo was the caption, “Why are you so afraid of a socialist economy?” And next to Trump's was, “Because Americans want to walk their dogs, not eat them.”

Captioning the meme, Trump Jr. wrote: “It’s funny cuz it’s true!!!”

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The incoming lawmaker took to Twitter in response, egging on the president's son, claiming that he makes comments about her when there are developments in Special Counsel Robert Mueller’s Russia investigation.

“I have noticed that Junior here has a habit of posting nonsense about me whenever the Mueller investigation heats up,” she tweeted. “Please, keep it coming Jr - it’s definitely a ‘very, very large brain’ idea to troll a member of a body that will have subpoena power in a month. Have fun!”

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She later reminded people on Twitter that she individually can’t subpoena someone.

“For the GOP crying that this is a ‘threat’ - I don’t have power to subpoena anybody. Congress as a body, GOP included, has the power,” she tweeted. “No indiv. member can issue a subpoena unless they are a Chair (which, as a freshman, I can assure you I will not be). Also must be under purview.”

Ocasio-Cortez has often criticized President Trump and his administration. As recently as Monday, she condemned the White House’s immigration policies, tweeting that the administration “has been criminal from the start.”