Moroun is an Arab American business man and the owner of CenTra, Inc., the holding company which controls the Ambassador Bridge. The former is significant as it is the only private ownership of a border crossing between the United States and Canada. He bought the bridge from the Bower Family in 1979. It is now estimated to be worth between 1.5 and 3 billion dollars. CenTra, Inc., is also the controlling body of Central Transport International, an LTL trucking carrier. Moroun also has a controlling stake in Universal Truckload Services Inc., which is in itself a holding company for several over-the-road truck lines (Universal Am-Can Ltd., Mason Dixon Lines, Economy Transport, etc.)
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A recent Forbes article listed him as the 321st richest American.