The GM strike marches on

General Motors workers have been striking since midnight on Sunday after contract negotiations broke down. The company’s use of temp workers is one of the main reasons for the strike. Temps make less money, don’t get benefits and can take very limited time off, unpaid. We hear from one GM worker who was a temp for four years before being hired full time. Plus: Why grad students might lose their ability to unionize, and what items will be exempt from tariffs.