The legislation passed in 1891 updated the 1882 Immigration Act that denied entry to "convicts (except those convicted of political offences), lunatics, idiots and persons likely to become public charges". Prospective immigrants were now refused if they had a "dangerous contagious disease" or were polygamists. It was now the responsibility of the commanding officer of every vessel bringing immigrants to the United States to report to the officials the "name, nationality, last residence, and destination of all such aliens".