3 students killed in mass shooting at Michigan State University

Three students were killed and five others were critically wounded after a gunman opened fire at Michigan State University. Police say the shooter died from a self-inflicted gunshot wound and doesn’t appear to be affiliated with the university. Former FBI Deputy Director Andrew McCabe joins AC360 to discuss the gunman’s motive and what investigators will be looking for.

Plus, Nikki Haley announced she will run for president in 2024. The former South Carolina governor and former U.S. ambassador to the United Nations is the first major Republican challenger to former President Trump. Katon Dawson is the former chairman for the South Carolina Republican Party and is a supporter of Haley. He tells Anderson Cooper where he sees Haley’s lane considering she’s now Trump’s opponent after being his ally for years.

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