Treasury Secretary Steven Mnuchin speaks during a Senate Small Business and Entrepreneurship hearing to examine implementation of Title I of the CARES Act, Wednesday, June 10, 2020 on Capitol Hill in Washington. (Al Drago/Pool via AP)

WASHINGTON (AP) — Building ramparts of secrecy around a $600 billion-plus coronavirus aid program for small businesses, Treasury Secretary Steven Mnuchin has moved from delay to denial in refusing outright to disclose the recipients of taxpayer-funded loans.

Mnuchin told Congress at a hearing this week that the names of loan recipients and the amounts are “proprietary information.” While he claimed the information is confidential, ethics advocates and some lawmakers see the move as an attempt to dodge accountability for how the money is spent.

Businesses struggled to obtain loans in the early weeks of the program, and several hundred publicly traded companies received loans despite their likely ability to get the money from private financial sources. Publicly shamed, a number of big corporations said they would return their loans.

“Given the many problems with the program, it is imperative American taxpayers know if the money is going where Congress intended — to the truly small and unbanked small business,” Senate Minority Leader Chuck Schumer said Friday. “The administration’s resistance to transparency is outrageous and only serves to raise further suspicions about how the funds are being distributed and who is actually benefiting.”

The Small Business Administration –î an agency with about 3,200 employees and an annual budget shy of $1 billion –î is shouldering the massive relief effort for U.S. small businesses and their employees left reeling by the economic punch of the pandemic. A signature piece of Congress’ multitrillion-dollar coronavirus rescue, and touted by President Donald Trump, the unprecedented lending program is intended to help small employers stay afloat and preserve jobs in a cratering economy losing tens of millions of them.

About 10 weeks after the program was launched, the SBA says it has processed 4.5 million loans worth $511 billion. But it has yet to make public the recipients of taxpayer aid. The agency has only provided general information, such as the total amounts of loans awarded in a given time period.

The loans can be forgiven if businesses use the money to keep employees on payroll or rehire workers who have been laid off.

South Carolina Rep. James Clyburn, who heads a House subcommittee overseeing the Trump administration’s coronavirus response, said he intends to push vigorously for greater transparency in the wake of Mnuchin’s remarks.

“Hiding recipients of federal funds is unacceptable and must end,” Clyburn, a Democrat, said in a statement to The Associated Press. “American taxpayers deserve to know if their money is being used to help struggling small businesses, as Congress intended, or instead is being siphoned off through waste, fraud and abuse.”

At least one Republican lawmaker shared the frustration over Mnuchin shutting the door on the data. Sen. Josh Hawley of Missouri was angered after SBA Administrator Jovita Carranza told him that confidentiality also applies to Paycheck Protection Program loans made to Planned Parenthood or its affiliates.

“We learned nothing new about what the SBA has been doing to rectify this, or if any of the funds have been paid back,” Hawley said in a statement Friday. “As far as we know, Planned Parenthood has taken $80 million in taxpayer money straight to the bank. It’s unacceptable and I won’t stop until I get answers.”

Asked previously by news organizations for information on the companies receiving loans, the SBA has said it’s too consumed by the urgent effort of helping small businesses through the economic downturn to provide the data. It said specific loan data may be released “in the near future.”

But Mnuchin ditched that ambiguous position this week, making it clear at a Senate hearing that the administration does not plan to disclose the recipient names and amounts. While the SBA administers the program, Mnuchin’s Treasury Department has ultimate control over it.

“We believe that that’s proprietary information, and in many cases, for sole proprietors and small businesses, is confidential information,” Mnuchin said during the hearing by the Senate Small Business Committee.