Xiaomi isn't dumping (yet), but BYD is, and US is already keenly aware of Chinese dumping of electric vehicles years ago, that's why US currently has the 25 percent tax on Chinese made autos that Trump started in 2018, and Biden has continued since [1]. And that has so far prevented BYD and its Chinese EV peers (90 makers so far, but looking like 2-3 bankruptcy each month) from entering US market. Republican lawmakers and Trump are also looking to apply a 100% tariffs [2]

Europe, the slow hare to US's rabbit, finally woke up in 2023, but just barely. They kicked off an inquiry into tariffs on Chinese EV vehicles in October 2023, and would take up to a year to finish [3]. These tariffs looks to be retroactive, as they have started requiring Chinese EV vehicles to be registered [4]. Europe, albeit slow witted, probably isn't going to willingly allow China to kill its own car industry, especially since China is actively helping Russia in attacking Europe.

[1] https://www.vox.com/climate/2024/3/4/24087919/biden-tariff-c...

[2] https://fortune.com/2024/03/16/trump-100-tariff-for-cars-mad...

[3] https://www.reuters.com/world/europe/eu-launches-anti-subsid...

[4] https://finance.yahoo.com/news/eu-moves-slap-retroactive-tar...