Let's talk about currency & companies and peas & carrots....

American capitalism is backed by mutual, insurance, pension, retirement savings and deposits in Federal Reserve Banks and their loan portfolios containing Treasury Notes and Bonds. China and Japan also hold bonds so they can trade with the US. Other overseas bonds are held by capitalists in tax havens - lots of whom are American billionaires. The top 1% hold half the mutual and bond holdings and 25% of longer term assets. families making less than $150K per year (this includes retirees, not so much for most workers) hold about a quarter of the bonds and mutual funds and less than half of the long term investments. Those with incomes between $150K and $500K hold the remainder - roughly a quarter of the debt held in any account. Those are the people who will later hold all of the assets retirees hold. 

People who labor have nothing. Not even cash. They are owned by capitalists. They do not own capital. The only thing they do own is their share of the debt held by the Social Security and Medicare Trust funds. These are the funds the GOP wants to force more money into from workers. 

What is my source for this analysis. The Survey of Consumer Finance held every three years by the Federal Reserve. Last reported survey is 2019 (pre pandemic). There was a survey gathered last year that will be reported about a year from now.

The GOP members and staff who are playing with debt default are essentially putting their donor base at extreme risk. They are either bluffing or stupid. My guess is the latter.