LOS ANGELES (AP) — As Usher prepares to launch a stadium tour with Chris Brown, he says the criticism and legal troubles surrounding the singer never factored into his decision to embark on the tour. “Absolutely not,” Usher told The Associated Press. “He’s my brother, and he’s amazing as a performer. That’s who I see. He works hard for his fans, and his fans support him. ”Brown has remained one of R&B’s biggest stars despite years of legal troubles and controversy. Last year,...