And Anthony Fauci, the head of the National Institute of Allergy and Infectious Diseases, told lawmakers on the House Oversight Committee on Thursday that “the system is not really geared to what we need right now” in and called the testing system “a failing.”

But Trump, who spent weeks downplaying coronavirus before declaring it a national emergency on Friday, argued that the health care system was not designed for an outbreak on the scale of coronavirus, “with the kind of numbers that we are talking about.”

The president kept his criticism lighter and more forward-looking at first, declaring that his administration is “leaving a very indelible print in the future in case something like this happens again.”

“That's not the fault of anybody — and frankly the old system worked very well for smaller numbers, much smaller numbers but not for these kind of numbers,” he added.

But then Fauci stepped up to the mic to clarify his position, arguing that the CDC’s testing system, “for what it was designed for, it worked very well,” and maintaining that an “embrace” of the private sector was necessary for testing at the kind of scale needed for the fast-spreading coronavirus.

Then, Trump began pointing fingers.

“If you go back — please, if you go back to the swine flu, it was nothing like this. they didn't do testing like this,” he interjected, referencing the 2009 H1N1 pandemic that sickened more than 60 million people between April 2009 and 2010. Trump asserted that the Obama administration “didn’t do testing” and that when “they started thinking about testing,” it was “far too late.”

He reiterated a claim made on Twitter earlier in the day, calling the Obama administration’s response to the swine flu outbreak “a very big failure,” though the H1N1's fatality rate of .02 percent is much lower than the lowest fatality estimates for the coronavirus thus far.

Trump later got testy with another reporter who pressed him on whether he bore any responsibility for the surge in cases, noting that he’d disbanded the White House’s pandemic office.

Trump told the reporter, PBS NewsHour's Yamiche Alcindor — with whom he's butted heads with in the past — that her inquiry was a “nasty question.”

After noting that his administration had quickly acted to restrict travel from China, where the coronavirus outbreak originated, the president said he personally was not responsible for dissolving the Directorate for Global Health Security and Biodefense, which had been part of the National Security Council until his administration disbanded it and rolled its officials into another office.