Donald Trump and Hillary Clinton went back and forth at the debate over jobs. 

Trump went after Bill Clinton for signing NAFTA, arguing that the trade agreement allowed American jobs to be shipped overseas.

He said places like Michigan and Ohio have been devastated by job losses. 

Trump called out Clinton for failing to come up with solutions in the last 30 years. He called NAFTA the "single worst trade deal" in U.S. history. 

Clinton countered that she always judged trade deals by whether they will help American jobs and raise incomes.

"I think my husband did a pretty good job in the 1990s," she said.

Watch above.