Regarding the recurring theme of a billion or trillion dollar coin, Len Augsburger writes:

Due to a technicality in the law, the Treasury Department can print a platinum coin and assign a huge value to it -- say, $1 trillion -- and sell it to the Federal Reserve Board. This would get around the need to borrow.

Such a move would be ridiculous, of course, but the whole standoff on the debt is ridiculous. If Senate Minority Leader Mitch McConnell and the Republicans insist on pushing it, Biden could well decide to get out the platinum coin.

To read the complete article, see:
Joe Biden could be tempted to reach for the platinum coin(https://www.cnn.com/2021/09/28/opinions/debt-ceiling-platinum-coin-biden-baker/index.html)

As Congress continues to flirt with the idea of not raising or suspending the nation's debt limit, economists and scholars are once again considering whether creative escape hatches like a trillion dollar coin or the invocation of the 14th Amendment might help the United States avoid a self-inflicted economic calamity.

After leaving office, Mr. Obama acknowledged that he and Treasury officials considered several creative contingency plans, such as minting a $1 trillion coin to pay off some of the national debt. In a 2017 interview, he described the idea as

Stu adds:

To read the complete articles, see:
Explaining the U.S. Debt Limit and Why It Became a Bargaining Tool(https://www.nytimes.com/2021/09/27/us/politics/us-debt-ceiling.html)
Pelosi says Democrats discussing future debt-limit options - including trillion-dollar coin(https://www.marketwatch.com/story/pelosi-says-democrats-discussing-future-debt-limit-options-including-trillion-dollar-coin-11632851809)

To read earlier E-Sylum articles, see:
INFLATION MONEY AND PROPOSED PLATINUM COIN DESIGNS(https://www.coinbooks.org/esylum_v16n02a23.html)
FIRM MARKETS FANTASY TRILLION DOLLAR COIN(https://www.coinbooks.org/esylum_v16n09a18.html)
MORE ON THAT TRILLION-DOLLAR COIN(https://www.coinbooks.org/v20/esylum_v20n04a33.html)