美国海关和边境保护局局长马克·摩根9月18日周五在推特上宣布，对美国与加拿大和墨西哥边境的旅行限制延长至10月21日。
Restrictions on non-essential travel at land border ports of entry have been extended through Oct. 21. @CBP is committed to slowing the spread of #COVID19 while keeping essential trade and travel flowing. pic.twitter.com/xSofqrU3Gh
— CBP Mark Morgan (@CBPMarkMorgan) September 18, 2020