Complex sentence: Noah was previously an assistant managing editor at "U.S. News and World Report", a Washington reporter for the "Wall Street Journal", a staff writer at "The New Republic" and a congressional correspondent for "Newsweek".
Split into simpler sentences: Noah was previously an assistant managing editor at "U.S. News and World Report" and a Washington reporter for the "Wall Street Journal". Before that, he was a staff writer at "The New Republic" and a congressional correspondent for "Newsweek".