* You need very high import taxes, so goods have to be produced with local labour
* If truly automation were to become pervasive, that needs taxing
* You probably need restrictions to prevent money from crossing borders too easily
* You can't have open borders
(or)
* You have to strongly respond to illegals working (or legalize them, while still killing those illegal jobs), because they'll destroy the bargaining power of others
(this is, incidentally, why for 90% of history leftists and communists were strongly against immigration, and the right was pro-immigration. Even today, the right is still in favor of (limited) immigration, that doesn't seem to have changed much. But I sometimes wonder if it isn't the case that Trump won because a significant portion of the left electorate voted for him because of the labour competition due to immigration and tolerating of illegal immigrants and illegal immigrants' labour)