It's an excuse to invade Mexico but I think the Mexican government is also not up to fight, they know it will only get worse if they fight the US military. But Gringos are welcome as long as they are also welcome in the country. Fair trade so let's just keep trading the fentanyl both our governments make money! Keeping this up, they will see the conquistadors ruling the entire country.
It's very weird that people would be delusional enough to say stuff like "immigrants will vote left so they are allowed in" by a party that got 10+ million votes just last election anyway, and they are basically doing as well as they could hope for in the election world, and they are not even left if you think about it.
Anyone who thinks Biden is left must never check any other nation, Biden is a right wing, or at best a center-right person, he is nowhere NEAR left at all. Do you want to see left? Go check Scandinavia, that's real left, that's how you happen to be left, look at labor party of UK, that's left, people like Macron and Biden look "left" because they are going against even worse right wingers, Biden looks left, because Trump is even further radical right, but that doesn't make Biden left, he is still closer to right.