USPS Priority Mail Internationalは通常受付から到着まで土日含めず５～１０日間で送り先に着くものです。
配送履歴
米国USPS分
July 14, 2021, 11:36 am
USPS in possession of item
SCHAUMBURG, IL 60195 (USPS)
July 15, 2021, 8:57 am（米国オヘア空港税関にて彷徨う）
Arrived at Regional Facility
CHICAGO IL INTERNATIONAL DISTRIBUTION CENTER
July 15, 2021, 8:57 am（米国オヘア空港税関にて彷徨う；２度記載しているわけではなく、この様にUSPSの追跡に表示されているので。）
Arrived at USPS Regional Facility
CHICAGO IL INTERNATIONAL DISTRIBUTION CENTER
July 16, 2021, 6:19 am（米国オヘア空港税関にて彷徨う）
Processed Through Regional Facility
CHICAGO IL INTERNATIONAL DISTRIBUTION CENTER
Your item was processed through our CHICAGO IL INTERNATIONAL DISTRIBUTION CENTER facility on July 16, 2021 at 6:19 am. The item is currently in transit to the destination.
▼ July 29, 2021, 11:08 am （10日以上経ったが未だに米国オヘア空港税関にて彷徨っているみたいです。）
▼ August 03, 2021 22:38pm （未だにオヘア空港。日本の届け先にもしかしたらかなり時間かかるよ！と連絡。）
August 4, 2021, 1:37 pm
Arrived
CHICAGO, UNITED STATES
Your item arrived at an origin transfer airport in O’HARE INTERNATIONAL, CHICAGO, UNITED STATES on August 4, 2021 at 1:37 pm. The item is currently in transit to the destination.
▼ 一歩進んでように思えるが、未だにオヘア空港という事実は変わらない。
August 5, 2021, 1:38 am
Departed
CHICAGO, UNITED STATES
Your item departed a transfer airport in O’HARE INTERNATIONAL, CHICAGO, UNITED STATES on August 5, 2021 at 1:38 am. The item is currently in transit to the destination.
August 6, 2021, 1:30 pm
Departed
TOKYO, JAPAN
Your item departed a transfer airport in NARITA, TOKYO, JAPAN on August 6, 2021 at 1:30 pm. The item is currently in transit to the destination.
August 7, 2021, 4:59 pm
Processed Through Facility
JAPAN
Your item was processed through a facility in JAPAN on August 7, 2021 at 4:59 pm. The item is currently in transit to the destination.
調べてみるとCBP（Customs and Border Protection）などのところは必要であれば最長45日間はパッケージを遅らせることができると書いてありましたが、他のキャリア、DHL、FedEx等の場合はすぐに通されるので結局の所USPS及び政府職員の職務怠慢で荷物が全く動いていないと高い確率で推測できます。
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