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> If the federal government mandates their citizens pay taxes on crypto, it most definitely should come with federal help in catching criminals.

Not necessarily. The OP is pretty light on details on what this "hack" was, but if this was the case of someone playing "code is law" games with a flawed smart contract, then I think it'd be totally legitimate for the government to require taxes be paid but not swoop in with law enforcement when someone made a bad deal (i.e. had their flawed contract exploited).