Contrast that with the situation today. Many of these illegals (I believe the majority) are coming here today for entitlements. These modern day contemporaries to the immigrants 100 years prior are a different animal. The consensus among these newly arriving illegals is that upon arrival the US government will just hand them $20,000/year and they will live like kings in comparison to their former standards. In fact, the cartels and Soros and others are actually advertising this notion in 3rd world countries throughout the globe in an effort to undermine the US economy. To a certain extent they aren't mistaken in this regard as socialism has proliferated in the US over the last century. Socialism is what these immigrants envision when they consider governments role as a social state. It is all they know.
Other distinctions must be made for those who enter with the interest of committing crime. Most notable is drug trafficking.
I'll give and example I witnessed first-hand as a continuation.