Can you use your wand?

Of course, you could probably save a little by sending yourself USDC from your @Cash App cash balance first instead (at least while that fee is still 0%); then, using something like @Boltz - Non-Custodial Bitcoin Exchange or @Blitz Wallet to swap from USDC to pay an ln BTC invoice. All this just makes it seem like Cash App doesn't have its incentives balanced out quite right yet. (and the end result is a slight disadvantage for using Cash App for BTC by comparison)

pending legislation will make it illegal to give passive yield for USDC. they will switch to a model of subsidizing network transaction fees. USDC transfers will probably become "free" everywhere forever

Interesting... though, I imagine the vast majority of the 0.9% fee mentioned here is for the swap rather than the ln network fees (which are usually way lower as well). I would expect Cash App to eventually charge a similar fee to swap from a dollar balance to pay a USDC invoice regardless of what the USDC network fees are.

USDC yield is 3.5%. circle can and will divert that onto both network fees and swap fees even on external platforms, and still have some left over