Our government says it's insensitive and racist to collect information about the country of origin of criminals they arrest and convict. They are, of course, lying. Their real reason is that, if the public knew how criminal immigrants actually are, almost everyone would hate Biden's open door policies.
Steve Hayward, the numbers guy at Power Line, has a couple of charts that look at crime done by immigrants vs. locals in two European countries. What's true there is probably true here as well.
The first chart shows violent crimes per 1000 persons, by group, in Norway. The country has more immigrants than you would imagine, we saw many in Oslo. Immigrants are much more crime-involved than locals.
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The second pair of charts show who does gang rapes in Germany, which has a large immigrant population thanks to Angela Merkel's insane open borders policy. Another chart (not shown) says immigrants are 16 times more likely to be involved in all rapes than are Germans.