William Weld: Trump Needs Someone to Challenge His Stances

It's important to have somebody who will "put the president to his proofs" and to challenge him on his stances, former two-term Massachusetts Gov. William Weld, who has announced his primary challenge against President Donald Trump, said Tuesday.

"You ask him some questions, like, why do you think it's good to insult our military allies, why do you praise dictators?" Weld told MSNBC's "Morning Joe." "Is it because you wish the United States was more dictatorial? I'm afraid that might be the case. Why are you so angry about everything...