Robert B. Semple, Jr. since 1988 has been Associate Editor of the Editorial Page for The New York Times. Between 1982 and 1988 he had been Editor of that newspaper's Op-Ed page. Semple started with The Times in 1963 in its Washington bureau and was a political reporter and White House correspondent during President Richard M. Nixon's first term. He has worked for The Times as a Deputy National Editor in New York and as London bureau chief. Semple in 1996 won the Pulitzer Prize for editorial writing on environmental issues.