Get all the latest news on coronavirus and more delivered daily to your inbox. Sign up here.

Sen. Tom Cotton, R-Ark., led a letter signed by 27 Republican senators asking Attorney General William Barr to investigate how several Planned Parenthood affiliates got $80 million worth of coronavirus relief funds from the Paycheck Protection Program (PPP) despite rules restricting them from receiving the money due to the number of employees the organizations have.

The letter comes after "Tucker Carlson Tonight" learned earlier this week that the Small Business Administration (SBA) is reaching out to the affiliates that improperly self-certified that they are eligible for the stimulus cash aimed at keeping small businesses afloat during the pandemic, and asking for the money back.

"This week, it was publicly reported that at least thirty-seven Planned Parenthood affiliates across the country applied for and received millions of dollars in Paycheck Protection Program loans administered by the Small Business Administration," the Republicans' letter reads. "These Planned Parenthood entities self-certified eligibility for these loans despite the clear ineligibility under the statutory text of the Coronavirus Aid, Relief, and Economic Security ("CARES") Act."

Co-signers include Senate Majority Leader Mitch McConnell, R-Ky., Sen. Lindsey Graham, R-S.C., and Sen. Ted Cruz, R-Texas.

CLICK HERE FOR FULL CORONAVIRUS COVERAGE

PLANNED PARENTHOOD AFFILIATES IMPROPERLY APPLIED FOR AND RECEIVED $80 MILLION IN CORONAVIRUS STIMULUS FUNDS, FEDS SAY

The letter cited a statement by the Planned Parenthood Action Fund noting that the SBA could exclude Planned Parenthood from the funding, holding it up as evidence that the organizations should have known they could not legally apply for the money.

"Based on these statements, it seems clear that Planned Parenthood knew that it was ineligible for the small business loans under the CARES Act long before its affiliates fraudulently self-certified that they were eligible. As you know, fraudulent loan applications can trigger both civil and criminal penalties," the letter said.

Organizations with more than 500 employees aren't eligible for PPP distributions, Fox News is told. The Planned Parenthood Federation of America (PFFA) alone has had more than 600 employees.

A Planned Parenthood affiliate in Metropolitan Washington (PPMW), for example, will receive a letter stating that although it self-certified that it was eligible for a $1,328,000 PPP loan in accordance with the SBA's affiliation rules, it will need to return the money.

CLICK HERE TO GET THE FOX NEWS APP

PPMW's request for money from the Trump administration came just months after the affiliate's president and CEO, Laura Meyers, promised to turn down federal funds.

McConnell, who was among the senators to sign the letter asking Barr to investigate Planned Parenthood, slammed the abortion provider in remarks on the Senate floor Wednesday.

"And we learned yesterday that the nation’s largest abortion provider, Planned Parenthood, abused this emergency process and grabbed tens of millions of dollars of taxpayer money for which they were completely ineligible," McConnell said. "This is the organization that fired its new president last year because she was too focused on broader health issues and not sufficiently fixated on abortion above all else."

McConnell added: "Disrespecting human life is their central mission. And they just took advantage of a national crisis and helped themselves to tens of millions of taxpayer dollars they were clearly forbidden from taking. It goes without saying the money must be sent back immediately."

The largest single government loan was a $7.5 million allotment to the Planned Parenthood of Orange and San Bernardino Counties in California. One Planned Parenthood affiliate received a loan but declined it.

Fox News' Gregg Re and Alex Pfeiffer contributed to this report.