It was used by Rand Paul, the Republican senator for Kentucky, earlier in the week as he became one of the few politicians to defend Mr Trump's election meddling comments.
"You know, Clapper wrote me a lovely letter when I first went to office and it was really nice and all of the sudden he's haywire", Trump said.
Earlier on Wednesday, Trump said "no" when asked if Russian Federation is still targeting the United States, again contradicting USA intelligence officials.
The president has never specifically blamed or condemned his Russian counterpart for poll interference and has instead sought to convey an abiding desire to work with him, insisting it was time the two leaders and their countries worked together to tackle key global challenges such as nuclear proliferation, terrorism, Syria and North Korea. But he then lowered his voice and responded, "No".
Last week Coats said Russian action was "persistent" and "pervasive".
Her comments stood in sharp contrast to those of White House press secretary Sarah Huckabee Sanders, who held open the possibility that what Trump called "an incredible offer" is being weighed. I will tell you though: "it better not be, it better not be", Trump told CBS News. "Do I believe that? No".
His comments came after Mr. Trump said in a meeting with Mr. Putin on Monday that he didn't see any reason why Russian Federation would have meddled in the 2016 presidential election with cyber attacks.
"Because he's in charge of the country".
Trump added: "Just like I consider myself to be responsible for things that happen in this country".
From the beginning of his administration, Sanders said, Trump had actually taken action to defend U.S. election system from meddling and interference. Tuesday, the day after, Trump said he meant to say the word "wouldn't".
"Certainly I can't have any confidence in the past".
Asked again whether the president believed that Russian meddling was going on, Sanders said "since there is now not an election today, not specifically", adding that "we believe that we are taking steps to make sure they can't do it again, unlike previous administrations".
While taking questions from reporters at a cabinet meeting, Trump said "thank you very much, no" after ABC News White House correspondent Cecilia Vega asked whether the United States is still a target of Russian-led cyberattacks and meddling into USA elections - directly contradicting what director of national intelligence Dan Coats has said on the matter.
Despite the public statement from Coats, Trump initially had been unwilling to back down from Helsinki remarks, according to a person familiar with deliberations.
At the Helsinki news conference, Trump cast doubt on the findings of the agencies.