本人想要自己办加的技术移民，现在住美国持f1签证，由于考虑面试的问题，决定填buffalo的申请，其中的第12.项 POLICE CERTIFICATES AND CLEARANCES，要求：
• Original police certificates of good conduct or clearances, from each country/
state/territory in which you and everyone in your family aged 18 years or over
have lived since reaching the age of 18.
• Submit original fingerprints directly to the authorities conducting the police
checks
• If you have obtained police certificates from countries where the authorities will
forward results directly to us, attach a brief explanatory note to your application.
应该到哪里办啊？是不是还是要附加国内的无犯罪记录什么的？而且我又换了几个州住过，都要分别开证明吗？指纹证明要到什么地方获得？
请知情的xdjm赐教一下，很着急又没注意！谢了！
（yi@dr.com)