Democrats have been staunch supporters of unfettered, borderless immigration over the last several years, often claiming that anyone against allowing undocumented individuals into the United States is a xenophobe and morally bankrupt. 
But as youll see below from none other than California Senator Dianne Feinstein, reducing the flow of undocumented migrants is a necessity for a variety of reasons, including budgetary considerations and lower crime. 
In the following video Feinstein makes the exact same points President Trump is making today, except somehow Trump is a wrong for doing so. 
What changed? 
People who should be here are those who come legally
 Weve got to enforce our borders. The day when America can be a welfare system for Mexico is gone. 
 Watch: at link.