XMR is not stable and is not pegged to the global currency which is USD that is why USDT is being used for illicit activities. Tether can freeze USDT only when authorities report it. Without any reporting, they don't freeze USDT and those criminals who are into money laundering are not some small-time thugs.
In general, I do not expect Tether to take measures against regulations. As Tether works, it is easy to impose measures on it, such as forcing users to perform identity verification or forcing users to send to a specific address. These deposits cannot be accepted until after AML procedures
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