Rep.-elect Alexandria Ocasio-Cortez (D-N.Y.) is facing criticism Friday over a tweet with a thinly veiled threat to Donald Trump Jr. after he slammed her for her socialist economic beliefs.

"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," she added, "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!"

The Democratic Socialist was referring to a post on Trump Jr.'s Instagram that showed a photo of her with the text, "why are you afraid of a socialist economy."

"Because Americans want to walk their dogs, not eat them," read a text response with a photo of President Donald Trump.

"It's funny cuz it's true!!!" Trump Jr. added.

Many took the response from Ocasio-Cortez as a threat to use the power of Congress to subpoena the son of the president.

Ocaso-Cortez fired back at her critics again via a tweet.

"For the GOP crying that this is a 'threat' - I don't have power to subpoena anybody," she tweeted.

"Congress as a body, GOP included, has the power," she explained. "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."