The U.S. trade deficit unexpectedly widened in February amid a slump in exports, according to the latest report by the Commerce Department. The trade gap increased 7.7% to $42.3 billion, the largest since September 2013. Economists had predicted a fall to $38.5 billion, according to Thomson Reuters. The rise in the deficit is being attributed to weak exports, which slipped 1.1% to $190.4 billion in February. As U.S. exports fell, U.S. imports rose 0.4% to about $232.7 billion.