In a Last Word exclusive, the top college Republican in Mississippi, Evan Alvarez, tells Lawrence O'Donnell why he left his party and became a Democrat.
After vetoing gun safety legislation last week, Gov. Christie's refusal to meet with Sandy Hook parents draws attention. David Corn and Jonathan Capehart discuss.
President Obama has scheduled a meeting on the border crisis to include Rick Perry in Dallas Wednesday. Norma Garcia, Krystal Ball, and Ari Melber discuss.
After 31 days below water, Fabien Cousteau joins Lawrence O'Donnell to talk about his expedition and the legacy of his grandfather, Captain Jacques Cousteau.
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