US visa a privilege, not a right, its screening doesn't stop after it is issued: Embassy
In a brief statement, the US Embassy also said using illegal drugs or breaking any US laws while on a student or visitor visa can make one ineligible for future US visas.
Using illegal drugs or breaking any U.S. laws while on a student/visitor visa can make you ineligible for future U.S. visas. A U.S. visa is a privilege, not a right. U.S. visa screening does not stop after a visa is issued – and we may revoke your visa if you break the law. pic.twitter.com/YaSm0pNkTm