Why need to worry? The solution is using DAI as a decentralized stablecoins, so your coins wouldn't get frozen.
DAI can also be frozen, but much more difficult than all other stable coins. DAI freezing requires a vote by MKR holders. Now, I dont know, whether government can bypass this and just enforce the freeze on DAI. Moreover, DAI is the most unstable StableCoin as it is NOT 1:1 pegged with USD. It has other StableCoins as underlying asset, which can itself be frozen, and ETH, which can crash in value, to make DAI value highly unstable.