> because a weak border creates a larger pool of illegal immigrants to draw from.

A larger pool with more rights and less fear of being deported. That means it's easier for them to pick and choose the jobs they do or even to start their own businesses.

They could, for example, form a union without the fear of deportation.

Look, if this were all about stopping illegal immigration, there are very fast paths to doing that. A prime one would be punishing not the immigrant, but the employer of the immigrant. Fine every farm in the US that employs an illegal immigrant and you'd quickly see the number of those jobs being worked drop.

But that's not what ICE is about which is why they and legislators haven't done that really basic enforcement.

Heck, at the start of this admin, Trump had to pull back ICE from raiding farms because the business interests of the farmers collided with the xenophobia of Steven Miller.