The majority of undocumented migrants aren't border crosses. They're visa overstayers [1].
And of course the "migrant crime" hysteria is completely made up. Despite there being at least 10 million undocumented migrants, the number of murders commited by both documented and undocumented migrants in 2024 was 29 [2]. Not 29,000. TWENTY NINE. That's a per-capita crime rate significantly lower than the American population.
[1]: https://www.npr.org/2019/01/16/686056668/for-seventh-consecu...
[2]: https://www.cbp.gov/newsroom/stats/cbp-enforcement-statistic...