By LINDSEY BAHR, Associated Press WASHINGTON (AP) — Carrie Underwood might not be Beyoncé or Garth Brooks in the celebrity superstar ecosystem. But the singer’s participation in President-elect Donald Trump’s inauguration is nevertheless a sign of the changing tides, where mainstream entertainers, from Nelly to The Village People are more publicly and more enthusiastically associating with the new administration. Eight years ago, Trump reportedly struggled to enlist stars to be part of the swearing-in and the various glitzy balls that follow.