Maybe the United States should also build a solar wall at the U.S.-Canadian border, so that the Canadian people don't feel slighted.
What about giving citizenship to all of the people who were eligible for DACA, and then offering them the voluntary opportunity to serve in an Americorps-type program in their countries of origin, or in countries near their countries of origin if their countries of origin are too dangerous? Most of them have probably never traveled outside of the United States, since they were advised not only to avoid traveling internationally but also to avoid traveling to states that were DACA obstructionists. To travel outside of the United States, they had to apply for "Advance Parole." PAROLE, it was called, and even if people were approved, it didn't guarantee that they could return to the United States.
Latin America needs help. I also think that seeing the conditions in those countries would permanently impress former DACA recipients with the advantages of being U.S. citizens at this time in history.
