As a presidential candidate, Donald Trump repeatedly attacked his Democratic adversary, Hillary Clinton, in 2016 over her use of a private computer server for official emails when she was U.S. secretary of state.
Now the Republican president has his own server problem as he seeks re-election to the White House in 2020.
A whistleblower's complaint that has led the U.S. House of Representatives to open a Trump impeachment inquiry accuses White House officials of trying to conceal "politically sensitive" information about Trump's July 25 phone call with Ukrainian President Voldymyr Zelenskiy by moving it to one of the government's most sensitive computer systems.