Representative Alexandria Ocasio-Cortez and Hillary Clinton have teamed up to mock the Trump administration amid new revelations that White House adviser Jared Kushner has potentially been communicating with foreign officials using the messaging service WhatsApp.

Ms Ocasio-Cortez, noting the apparent hypocrisy of a top Trump administration official using private communication methods after the president repeatedly railed on Ms Clinton for her use of a private email server while secretary of State, tweeted a simple response to the news.

“But his WhatsApp,” she wrote, referring to the scandal that plagued Ms Clinton even though she was ultimately not charged with crimes.

Ms Clinton’s use of the private email server became a major point of contention in 2016, and was often seen as overshadowing Ms Clinton’s campaign.

Since Mr Trump’s win that year, the phrase “But her emails” has become a meme, employed whenever the Trump administration does something that seems untoward.

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“Tell me about it,” Ms Clinton wrote in response to Ms Ocasio-Cortez.

Mr Kushner is the president’s son-in-law, and was accused of using WhatsApp for official business in a letter by a top House democrat, Representative Elijah Cummings.

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Since joining the White House, Mr Kushner has been given broad authority and responsibility. He has been tasked with, among other things, negotiating peace in the Middle East and working towards criminal justice reform in the US.