Abolish ICE, eliminate detention centers, provide healthcare and other benefits to undocumented immigrants without taxation is essentially open borders.
On having a southern border wall, I could possibly be swayed that it isn't worth the cost (though in the grand scheme of govt spending it isn't much), but the idea that it is immoral is also essentially open borders. A sovereign country has a responsibility to its citizens to control illegal entry and secure the country from foreign security threats, IMO. If a person wants to argue for and vote for politicians that allow more legal immigration, cool. But that's a different argument than to not control entry, not enforce federal laws and not require documentation.