What would happen if the US Treasury puts the USDC/WETH and/or USDT/WETH LP CA’s of Uniswap/Sushiswap and the other dexes on the blacklist?

Would Circle and iFinex/Tether blindly update their contracts within 24 hours? I mean, it basically means the state demands them to burn some IOU's that can then not be exchanged for backing meaning these companies now get to keep that backing. (or does the state go to them to ask for it?)

What even happens if the USDC on 0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640 (this is USDC/WETH on uniswap V3) gets frozen?

Can you still open up your LP tokens to get ETH back if there is an error on the USDC?

To those who are asking why the US Treasury would put these CA"s on their blacklist …. what if a politician with enough power to put pressure on the US Treasury decide to put these on there with the intent to crash the price of Ethereum because he shorted it first.

Some other unknowns.

all the USDC inside USDC/WETH is suddenly frozen on the top 10 dexes, what happens to oracles like chainlink what price for USDC/ETH do they report if something like this would happen?

Would it cause a cascade effect of liquidations as some oracles see the ETH price as zero USDC?