Senators Richard Burr and Kelly Loeffler have faced calls to resign after it was revealed that the Republican lawmakers sold off stock holdings before the COVID-19 epidemic crashed markets.

Both of the senators reportedly attended briefings on the novel coronavirus outbreak and publicly sought to calm nerves as they dumped chunks of their portfolios ahead of market turmoil in March.

ProPublica reported on Thursday night that North Carolina Sen. Burr, the Senate Intelligence Committee chairman, sold between $628,000 and $1.7 million worth of stock on February 13.

The stock dump came days after he co-authored a Fox News op-ed claiming the United States was "better prepared than ever before to face emerging public health threats, like the coronavirus."