Honestly as with most issues, it needs to be comprehensive and non-partisan. (I know right)
The physical wall is not a bad idea, but absolutely having harsh penalties for those who employ illegals or use fake tax and Social security numbers for them. Help those that are non-criminals, non-mentally ill, etc and really do want to make a better life and assimilate into American society have a quicker legal option to do so. Absolutely require cities to cooperate with ICE to deport criminals
This would help the issue by 100% but we have to get the “ICE is racist, etc” rhetoric out as much as Trump’s rhetoric