At least six of Donald Trump's close advisers have been caught using private emails for White House matters, it has surfaced.
On Monday former officials came forward and revealed Jared Kushner, Mr Trump's son-in-law and adviser, had sent or received over 100 work-related emails from a private account.
The following day it emerged he wasn't alone. Five others, including former chief strategist Stephen Bannon and former chief of staff Reince Priebus, also have used private email addresses.
It is not illegal for staff to use their private email accounts, as long as they forward those emails on to their work account for transparency should someone need to oversee their conversations.
During Mr Trump's political campaign he put Hillary Clinton's use of a private email address front and centre, labelling her "guilty as hell".
In early October at the second presidential debate, Mr Trump told Ms Clinton: "If I win, I am going to instruct my attorney general to get a special prosecutor to look into your situation".
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"My son Donald openly gave his e-mails to the media & the authorities whereas Crooked Hillary Clinton deleted (& acid washed) her 33,000 e-mails!" he wrote on Twitter earlier this year.
The FBI decided last year not to recommend criminal charges against Ms Clinton for her email practices. Mr Trump fired FBI director James Comey in May.