"I tried to do the story of Biden's health before anybody else did in network, because I'd seen it and I got shut down very hard," Terry Moran said.

WASHINGTON, Sept 21 (Reuters) - US President Donald Trump has invoked Joe Biden ’s name almost 900 times this year, a Reuters review shows, keeping his predecessor at the center of debate as Republicans fight to hold their fragile grip on Congress in November’s midterm elections.