U.S. Sen. John Fetterman, the Pennsylvania Democrat who suffered a stroke during his campaign last year, is in a Washington D.C. hospital. His spokesman says the new senator was admitted Wednesday night after feeling lightheaded when he was at a Democratic retreat. Joe Calvello says that initial tests haven’t shown any evidence of a new stroke. Fetterman will stay at the hospital for observation while doctors run more tests.  Cavello adds that the senator is in a good mood and is talking with his staff and family.