In an attempt to sound upbeat and to downplay the new developments in a controversy that has now reached the Oval Office, Trump also said that "despite the phony witch Hunt going on in America, the economic & jobs numbers are great".
On Twitter, Mr Trump dismissed as "phony" the idea his campaign colluded with any Russian effort to sway the 2016 United States election. The US president is reportedly probed over obstruction of justice. Pence headed the Trump transition until inauguration day.
Mr Trump said, according to a U.S. official quoted by the New York Times. The transition, a nonprofit structurally separate from the Trump campaign, continues to operate with a small staff. In part, the memo read that former transition team members "have a duty to preserve any physical and electronic records that may be related in any way to the subject matter of the pending investigations".
Trump blasted the article on Twitter, saying "They made up a phony collusion with the Russians story, found zero proof, so now they go for obstruction of justice on the phony story".
President Trump has repeatedly denied any collusion with Russian Federation, describing the ongoing inquiry as a "witch hunt".