Donald Trump's plan to deport millions of people living in the US illegally also drew Hillary Clinton's ire.
Hillary Clinton says Donald Trump's economic policies are a "recipe" for lower wages, fewer jobs and more debt - warning union members that he could "bankrupt America like he's bankrupted his companies."
The Democratic presidential candidate urged thousands of union workers gathered in Detroit on Monday to ask: "How can anybody lose money running a casino, really?"
The presumptive Republican nominee's plan to deport millions of people living in the US illegally also drew Clinton's ire.
She says Trump would send a "deportation force" to schools, workplaces and homes - "ripping apart families."
Clinton spoke at the Service Employees International Union's international convention. She says child care workers, home health aides and others in the union are "unsung heroes" and their fight for higher wages "are my fights."