The Federal Reserve is developing new rules that would change how it defines a big bank and potentially lower regulatory costs for a broader number of financial institutions.

As part of a series of rule changes under consideration, the Fed is preparing to revise asset size and other thresholds in its capital and liquidity rules, according to people familiar with the matter.

The changes could ease regulatory costs for some large U.S. banks, including Capital One Financial Corp., PNC Financial Services Group Inc., and U.S. Bancorp. It is less clear whether the changes would help gigantic businesses the Fed considers “systemically important” to the global financial system, such as Citigroup Inc. and Goldman Sachs Group Inc.

The proposed moves are part of the Trump administration’s broader push to revisit bank rules it believes are overreaching. Critics of the changes say they dial back regulations intended to prevent a repeat of the 2008 financial crisis.

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