If I could convince you that the largest block of visa overstays are from Canada, and that a good chunk of them are from European countries, would you reconsider whether targeting Hispanic people is racist?
Are most of these Canadian visa holed up in the various Motel 6s in the Washington area? I imagine the ICE fished in this area, because it was a good spot to catch fish. In general, I don't think much of the government, but I am sure they have metrics. The local ICE satrap isn't going to keep sending people to Motel 6 if they aren't catching any fish.
It's amazing the mental acrobatics that people go through to try to find an after-the-fact justification for targeted racist policy.
The administration is run by white supremacists. They overtly and covertly signal their support for neo-nazis, and have campaigned on their overt bias against hispanic immigrants.
Where is Occam's Razor in this case? Why is this simple explanation invalidated by a more complex one?
Why was this particular policy started under Obama? Interested to hear your mental acrobatics.
Let me apply Occam's Razor, a lot of government employees are lazy, so going to the Motel 6 makes sense. Get the names, run some queries, arrest some people, hit my target number, the boss is happy. We have been doing this since 2015, why fix it, if it isn't broken.
Why do you assume Obama was or could have been any better?
The same people held power in 2015: Graham, McConnell, Sessions. The same media institutions toed the line. McCain got the whole nationalist jingoism ball rolling with Sarah Palin on his ticket.
I hold to account whoever has power now. I don't play the "whataboutism" game, because it is unwinnable. There was always someone in the past that has done worse.