en. Markwayne Mullin's, R-Okla., confirmation hearing to serve as Homeland Security secretary began with a tense exchange between him and Sen. Rand Paul, R-Ky. Paul pressed Mullin to account for his prior comments referring to Paul as a "snake in the grass" and saying that he "understood" why one of Paul's neighbors assaulted him. "I think that everybody in this room knows that I'm very blunt," Mullin told Paul. "I simply addressed that-- I said I could understand, given the behavior you were having that I could understand why the neighbor did what he did." "As far as my term...