It has happened to me while entering in a National Lab. Though I had submitted all my credentials including passport and visa inforamtion for prior background check they didn't let me in without passport. Luckily my apt was few minutes away from the lab. And the worst thing was American were allowed with the same driving licence and not the foreigners. Didn't make sense to me. But, it seems they wrote that clearly in the website so couldn't argue with them.