Jerome Powell

The central bank is only now nearing the launch of the credit facilities after the effort was announced in April. But Chairman Jerome Powell said loans have been available through other means.

The central bank will increase support for credit issued through the Main Street Lending Program while providing midsize firms with more flexibility on the amounts they receive.

The head of the U.S. central bank said its emergency credit programs were not designed to prop businesses up over the long term.

The central bank will disclose information on a monthly basis about its Term Asset-Backed Securities Loan Facility and its Paycheck Protection Program Liquidity Facility.

The agency is being methodical in its rollout of the Main Street Lending Program in hopes of avoiding missteps that followed the launch of other coronavirus relief efforts. But observers say delaying aid brings its own risks.

The Federal Reserve chairman pledged to use every tool at the central bank's disposal to limit the economic fallout from the coronavirus and urged lawmakers to take further action.

The central bank and other agencies have come under pressure to be transparent about their use of funds authorized by the recent pandemic rescue law.

The head of the Senate panel overseeing Federal Reserve and Treasury Department efforts to boost the U.S. economy urged the agencies to remember their disclosure requirements.

The letter written by Rep. Maxine Waters, D-Calif., and Sen. Sherrod Brown, D-Ohio, was seen as a boost to Wall Street lobbying efforts seeking to quell the fallout of the coronavirus crisis on the mortgage market.

The Fed's actions are designed to ensure the flow of credit to midsize businesses and state and local governments hit hard by the economic impact of the coronavirus pandemic.