Complex sentence: He is a correspondent for the CBS News Magazine, "60 Minutes" and was a correspondent on "60 Minutes II" from 1999 to 2004 and the CBS News chief White House correspondent from 1997 to 1999.
Split into simpler sentences: He is a correspondent for the CBS News magazine, "60 Minutes", and was a correspondent on "60 Minutes II" from 1999 to 2004. Pelley had been the CBS News chief White House correspondent from 1997 to 1999.