Anthony Fauci escalated his spat with some lawmakers over the nation’s COVID-19 response by claiming they oppose "science." .

Rand Paul, R-Kt., has frequently sparred with Fauci over various statements and policies the president’s chief medical adviser has made or endorsed. .

Most recently, Rand blasted Fauci for "obfuscating the truth" about the National Institute of Health funding gain-of-function research after the organization admitted in a letter to House Oversight Committee ranking member James Comer, R-Ky., that a "limited experiment" was indeed conducted.

Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, speaks during a Senate Health, Education, Labor, and Pensions Committee hearing on Capitol Hill, Thursday, Nov.

Fauci, during an interview with "Face the Nation," dismissed opposition by such lawmakers as "noise," saying they’re "really criticizing science." 

"Anybody who’s looking at this carefully, realizes that there’s a distinct anti-science flavor to this, so if they get up and criticize science, nobody’s going to know what they’re talking about," Fauci said

"But if they get up and really aim their bullets at Tony Fauci, well people can recognize that there’s a person there, so it’s easy to criticize, but they’re really criticizing science because I represent science." 

Paul took to Twitter Sunday morning to respond to Fauci’s claims, calling it "absolute hubris" for Fauci to declare he represents science. 

Senator Rand Paul, a Republican from Kentucky, speaks during a Senate Health, Education, Labor, and Pensions Committee hearing in Washington, D.C., on Thursday, Nov