I made it too late to this thread and now all the top comments are corporate shill posts for the big 3 American OEMs who already outsourced the hell out of their production lines meaning none of their points about protection or votes has been valid for at least 15 years.
Even if Mexico magically invented their own cheap EV, you better bet the USA will have that blocked or at the very least smacked with a huge tariff for no reason beyond protecting some megacorp profits.
They already lobbied for all these stupid rules against JDM back when Japan proved it could make superior cars for cheap. Then, it took them decades to enter the US market locally by building factories and whatnot.
Biden is blocking because China bad and muh lobbyist profits, not because there's an actual issue of safety or security.
Same with Huawei, they blocked their phones and telecommunication equipment and never managed to show any proof that the Chinese government is actually snooping on their equipment.
And it is not like the US doesn't have a proven track record of pushing American suppliers to put backdoors and pretty much doing exactly what they accused Huawei and indirectly China of doing.