Asked whether he would be willing to meet special counsel Robert Mueller, Trump deflected the question by repeatedly denying that investigators had found any evidence of collusion between his campaign team and Russia.
"I'll see what happens. But when they have no collusion -- and nobody has found any collusion at any level -- it seems unlikely that you would even have an interview," Trump said.
Trump had previously said he would be "100 percent" willing to meet Mueller, a former FBI director.
The 71-year-old president has strenuously denied that his campaign worked with Russia to undermine the campaign of Trump's rival Hillary Clinton.
Two Trump campaign aides -- including campaign manager Paul Manafort -- have been indicted in the investigation.
Two more -- including former White House national security advisor Michael Flynn -- have pled guilty to lying to the FBI about their contacts with Kremlin-connected officials.
Appearing before Mueller would pose legal and political risks for Trump, who has often claimed that he is not personally under investigation.
Former president Bill Clinton's impeachment on counts of perjury and obstructing justice was fueled by misleading testimony he gave to prosecutors.
Mueller is also believed to be investigating whether Trump and his inner circle sought to obstruct justice, which has raised speculation that the president himself would be interviewed.
Trump had said he fired FBI director James Comey last year in part because of his earlier investigation into Russia and the 2016 election.
