The U.S. trade deficit narrowed slightly in March as a decline in imports was tempered somewhat by a plunge in exports. The trade deficit contracted 0.1% to $69.4 billion, the Commerce Department's Bureau of Economic Analysis said on Thursday. Data for February was revised to show the trade gap widening to $69.5 billion instead of $68.9 billion as previously reported. Economists polled by Reuters had forecast the deficit climbing to $69.1 billion in March.