U ), ▁and ▁it ▁is ▁party ▁to ▁the ▁African ▁G row th ▁and ▁O pport unity ▁Act . ▁ ▁Ben in ▁applies ▁a ▁common ▁external ▁tar iff ▁( C ET ▁– ▁Tar if ▁Ex ter ieur ▁Commun , ▁T EC ▁in ▁French ) ▁together ▁with ▁other ▁countries ▁belonging ▁to ▁W A EM U ▁- ▁Bur k ina ▁F aso , ▁C ô te ▁d ' I vo ire , ▁Guinea - B iss au , ▁M ali , ▁Niger , ▁Sen eg al , ▁and ▁T ogo . ▁The ▁C ET ▁establish es ▁four ▁categories ▁of ▁products ▁on ▁which ▁tar iffs ▁are ▁zero , ▁five , ▁ 1 0 , ▁and ▁ 2 0 ▁percent . ▁Ben in ' s ▁en act ment ▁of ▁the ▁C ET ▁and ▁its ▁acc ession ▁to ▁the ▁World ▁Trade ▁Organ ization ▁have ▁elimin ated ▁many ▁trade ▁bar riers . ▁ ▁Ben in ▁has ▁signed ▁bil ater al ▁trade ▁agre ements ▁for ▁the ▁promotion ▁and ▁the ▁protection ▁of ▁invest ments ▁with ▁Germany , ▁Tun is ia , ▁Switzerland , ▁China , ▁Portugal , ▁Greece , ▁France , ▁and ▁the ▁United ▁States . ▁ ▁Currently ▁imports ▁of ▁all ▁products ▁are ▁allowed ▁and ▁there ▁are ▁no ▁indic ations ▁that ▁this ▁will ▁change ▁in ▁the ▁for ese e able ▁future . ▁The ▁Lag os ▁post ▁of ▁the ▁US DA ▁Foreign ▁Agricult ural ▁Service ▁de alt ▁with ▁only ▁two ▁trade ▁issues ▁between ▁ 2 0 1 0 ▁and ▁ 2 0 1 4 , ▁both ▁of ▁which ▁were ▁easily ▁and ▁successfully ▁resolved