WASHINGTON: Carrie Underwood might not be Beyonc or Garth Brooks in the celebrity superstar ecosystem. But the singers participation in President-elect Donald Trumps 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 th