A Belge-Francophobe customs officer is forced to team up with a Frenchman during the elimination of the Franco-Belge borders in the 90s. The director is Dany Boon, known from French movies like Bienvenue chez les Ch'tis (http://www.youtube.com/watch?v=fY5cWL4SUmw) and producer for Mic Macs à tire-larigot(http://www.youtube.com/watch?v=MbcsFkh-MBc), both hilarious films. you should give it a chance American. Also, every is subtitled.
Ok, here's the trailer of Rien à Declarer/ Nothing to Declare: