WASHINGTON (AP) — Guan Heng , a Chinese national who exposed human rights abuses in his homeland, has been released from federal detention more than five months after being swept up in the Trump administration’s mass immigration enforcement operation. Guan was released and reunited with his mother on Tuesday, nearly a week after being granted asylum by an immigration judge who determined that he faced a well-founded fear of persecution if sent back to China. “I’m in a great mood,” Guan, 38,