At a joint White House news conference with the President of Colombia, the President also had especially tough words for former Director James Comey, whom he fired just over a week ago, saying Comey was not the right person to lead the FBI.
"Director Comey was very unpopular - with most people," Mr. Trump said flatly, an assertion that has been contradicted by some within the bureau.
Mr. Trump said Comey's most recent testimony before Congress on May 3 was a "poor, poor performance," which he said directly led to the Deputy Attorney General writing a letter that raised questions about Comey's job performance.
Pressed for the first time by White House reporters on why he fired Comey, the President rejected reports that he had leaned on the FBI Director during a White House meeting to drop a probe of former National Security Adviser Michael Flynn.
"No," the President said emphatically when asked about Comey and Flynn.
"Next question," Mr. Trump said.
The President repeatedly said it was time to move on from the Russia probe, and get back to the business of the nation.
"We have to get back to running this country, really, really well," as he said that "tremendous progress" had been made in his first four months in office.
The news conference marked the first substantive public comments by the President on domestic policy matters in the last two weeks, since he celebrated the May 4 approval in the House of a GOP health care bill.
After that health care victory, the President had said almost nothing in public about his legislative agenda, focused instead on firing the FBI Director, and dealing with a growing investigation into the Russia matter.
"We look forward to getting this whole situation behind us," the President said.