Here's three principles to promote the common good:
1. Illegal immigrants should not be allowed to break the law; illegal immigrants do this every day when they force themselves into America.
2.  Illegal immigrants should not be assisting multi-national and trans-national corporations to drive down the wages of all working class people.
3.  Illegal immigrants are taking jobs away from poor and young white, black and Hispanic American citizens.
Where did these principles come from: Civil rights activist, African American, lesbian, physically disabled, and hero to the American left and progressives: Congresswoman Barbara Jordan.  Her Immigration Task Force in the 1990's came up with these three principles, and I wholeheartedly agree with them.  They were sound then, and they're sound today.