Why tf is everyone so excited about getting nations to hold bitcoin? What is all this nonsense of "nations trading" -- nations do not trade, individuals and companies trade. The only "trade with a nation" is one that is deeply communist, and fuck those.
1 million bitcoin might cost $1 trillion, and it probably won't go forward. Instead, $42b across each American citizen would be $121 per person, payable EXCLUSIVELY via Lightning. Most people won't use it. Great, if 1 in 10 do, send $1,210 to those that do, and you will then have 34 million bitcoin stackers in America who may build businesses and support the foundations of freedom.
1 million bitcoin on the Treasury balance sheet is a large IRS and Chainalysis budget.
If the Government allows itself to add bitcoin it seizes to its reserves, it will create new reasons to seize bitcoin.