If you want to be incognito as an American abroad, pack these 15 wardrobe staples.Credit: Travel + LeisureI’m a U.S. citizen, but thanks to my heritage, I also hold two European passports. I travel to Europe often, so I learned early on that what I wear there can immediately give away my status as an American. Sometimes, I’m fine with that, but other times, I want to blend in and dress to do so. While being pegged as a tourist isn’t necessarily …