JP Morgan says the US Treasury has limited liquidity to support coordinated yen
intervention with Japan, though unconventional steps could materially expand
capacity. Strategists Junya Tanase et al. note the Treasury's Exchange
Stabilization Fund held about €13bn of euro assets and $25.5bn of other foreign
assets as of June, small versus Japan's roughly $35–60bn intervention scale in
2022–26. Converting IMF Special Drawing Rights into dollars and swapping
foreign-currency assets into dollars could, in theory, boost Treasury firepower
to about $187bn; Federal Reserve participation could effectively double that. JP
Morgan adds it does not expect unlimited Treasury intervention because ESF
resources are finite and additional funding would likely require congressional
appropriation.