Dr. Anthony Fauci declined to answer senators’ questions during a Wednesday hearing focused on the origins of Covid-19 and the federal government’s handling of the pandemic. Instead of testifying on those points, Fauci said he would invoke his Fifth Amendment right.

According to the report, Fauci said he was taking that step to avoid the possibility that Republicans could try to use his testimony against him. The hearing centered on two politically charged issues that have continued to draw scrutiny: how the pandemic began and how U.S. officials responded as the crisis unfolded.

The clash also highlighted Fauci’s long-running conflict with Republican critics in Congress. The headline notes that Fauci described Sen. Rand Paul as “unhinged,” underscoring the personal and political tensions that have surrounded past disputes over Covid policy and oversight.

Fauci’s decision not to answer questions is likely to intensify debate around accountability, congressional investigations and the lasting political fallout from the pandemic. It also adds another flashpoint to the broader fight over how Covid-era decisions are judged years later.