美国移民局发布新的密码箱提交位置更新网页
September 16, 2021
USCIS website will now feature a Lockbox filing Location Update page, where customers can track when lockbox form filing locations are updated. Updates will also be emailed and announced on social media. The agency also encourages users to check the “Where to File” section of their form’s webpage for the most current information on where to mail their form.