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Not the same thing as a conviction
Courts largely don't find you "innocent" outside of post-conviction exonerations. Just "not guilty".
But regardless: we all know that it isn't "because" of a DUI conviction, that is a proximate cause (or just an excuse). Deportation is an explicit and very clearly stated policy goal of the current administration. Very clearly this is being pursued in that context and for the reasons stated. They're doing what they were elected to do.
That it is also unjust and horrifying is an unfortunate side effect, demanding (I guess) that some people try to excuse it as a DUI thing.
Actually finding criminals to deport takes time and work and these people don't have time to actually do a real job.