As Budget-neutral is the phrase that pays now, I've been watching some of the possible ways this administration plans on achieving that target.
The US government maintains strategic reserves covering a range of assets and commodities, including gold, petroleum, natural gas, foreign currency, medicine, land, critical rare-earth minerals and even cheese.
The most liquid of these strategic reserve assets are petroleum, gold and foreign currency.
While I suppose that selling current reserves to buy new ones is technically "Budget-neutral" it's still using reserves that were originally purchased with taxpayers money. Furthermore, there's nothing saying that the government needs to be Budget-neutral in order to replenish their current reserves.
Ie, sell the oil, use that money to buy bitcoin. Woops, our oil reserves are low so we can use taxes to restock.
Unfortunately, no matter what they claim, it's almost 100% likely that the taxpayers are going to be buying bitcoin.