Additionally, it was revealed late past year that the president's daughter and senior adviser Ivanka Trump used a private email account to send hundreds of emails to Cabinet officials, White House aides and personal assistants throughout much of 2017.
'These communications raise questions about whether these officials complied with the Presidential Records Act and whether the White House identified this personal email use during its internal review and took steps to address it, ' Cummings wrote.
The allegations from Democrats that some of Trump's closest confidants - as well as former officials Steve Bannon and K.T. McFarland - used personal email come as Trump continues to attack Hillary Clinton for using a private email system when serving as secretary of state.
That proposal is under investigation by Cummings' committee, which is looking into information from whistleblowers who have said they witnessed "abnormal acts" within the Trump National Security Council involving senior White House officials who were pushing the plan.
Cummings wrote in a Washington Post op-ed that he has sent 12 letters to the White House on a range of topics ranging from security clearances to the use of taxpayer funds for lavish private aircraft.
"For example during a meeting with Mr. Kushner's attorney, Abbe Lowell, Mr. Lowell confirmed that Mr. Kushner has been using the messaging application WhatsApp as part of his official White House duties to communicate with foreign leaders". He said Lowell told them Kushner preserves records of his communication by taking screenshots of his WhatsApp messages and forwarding them to his official White House email.
"The president must be free to engage in discussions with foreign leaders without fear that those communications will be disclosed and used as fodder for partisan political purposes", Cipollone wrote, adding, "No foreign leader would engage in private conversations with the president, or the president's senior advisors, if such conversations were subject to public disclosure (or disclosure to committees of Congress)".
House Intelligence Committee ranking member Democratic Representative Adam Schiff speaks with reporters following a news conference on the Trump-Putin Helsinki summit in the U.S. Capitol Visitors Center, on July 17, 2018.
Twitter faces $250 million lawsuit over allegations it 'shadow bans' conservatives
Dorsey said Twitter "would fully admit we were probably way too aggressive" when dealing with conservative accounts. According to Fox News , Nunes is sick of being mocked and ridiculed on Twitter and is striking back.
Cummings has accused the White House of "stonewalling".
Lowell responded Thursday to Cummings' letter, which he said is "not completely accurate about what was said".
"I did not specify who they were", Lowell said. The attorney noted Kushner has "numerous friends and contacts overseas".
As to whether Kushner shared classified information, Lowell replied: 'That's above my pay grade'. He said his comments to the committee involved Ivanka's email use before September 2017.
The three House chairmen responded Thursday with a statement saying Cipollone's letter "continues a troubling pattern by the Trump Administration of rejecting legitimate and necessary congressional oversight with no regard for precedent or the constitution". He also said that the Oversight Committee learned that McFarland "conducted official business on her personal AOL.com account" when she was deputy national security adviser and that they had "also obtained a document that appears to show that Bannon, former White House Chief Strategist, received documents" related to transferring USA nuclear technology to Saudi Arabia.
But Cummings said that the White House has failed to produce many documents that he and his panel have demanded.
The White House Thursday rejected a call by House Democrats for documents relating to private conversations between President Trump and his Russian counterpart, Vladimir Putin.