On Mar. 26 2020, the [Federal Reserve’s Balance Sheet Tops $5 Trillion for First Time](https://old.reddit.com/r/economy/comments/fpk055/federal_reserves_balance_sheet_tops_5_trillion/). Is the Fed's spending capped at some maximum? 

I studied in Canada and am ignorant of U.S. I'm asking about just Fed, not US govt. I quote [MarketWatch](https://www.marketwatch.com/story/fed-balance-sheet-hits-record-as-powell-says-there-is-no-limit-to-lending-power-2020-03-26?mod=nextup_bomw)

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> In an NBC News interview aired Thursday [Mar. 26 2020] on “The Today Show,” Fed Chairman Jerome Powell said there was essentially no limit to the Fed’s emergency lending ability.
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> “We can continue to make loans, and the point of all that is to support the flow of credit in the economy to households and businesses,” he said.
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> The Fed is only limited by how much backstop it gets from the Treasury Department.
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