Climate change is the biggest governing challenge we face. It's the biggest governing challenge I think we've ever faced.
Chris HayesSomething changed between the two men, namely [Donald ] Trump started slinging mud on Twitter about [Ted] Cruz`s wife, Heidi, including a mean comparing her looks unfavourably to his own.
Chris HayesA Republican primary race that has for months alternated between spectacle and abomination has over the past 20th hours ignited into a raging, full-blown dumpster fire. One stoke by a group of men who hope to become the most powerful person in the world.
Chris HayesIt`s been a long and tumultuous relationship between Donald Trump and Ted Cruz that started off more or less as allies during the Republican primary. As Trump took the early lead in polls, Cruz stuck with the strategy of drafting off of the front-runner waiting for the moment to make his move.
Chris Hayes