Local experiments in rent control have failed time and time again. But now, presidential aspirant Bernie Sanders’ wants to force through socialist pricing controls at the national level.

The Vermont senator revealed a sweeping $2.5 trillion “housing for all” plan on Wednesday to much liberal fanfare. The plan invokes the (very real) affordable housing crisis to push for expanding investment in the National Affordable Housing Trust Fund, increased construction of more public housing, and new state grants to fight homelessness. It’s overly optimistic for sure: The public investment Sanders suggests is both incredibly expensive and uncertain to provide adequate returns.