This is from Sansaku Complex, a NSFW site:
The Japanese have been banned from shipping packages of any significant size to the land of the free as the US believes they are likely a bunch of freedom-hating terrorists.
Japan Post, Japan’s main international package delivery service, report that due to terrorism fears in the USA they have been forced to indefinitely stop accepting any items over 453g (16 freedom ounces) in weight for air shipment to the US or its various island territories.
The size restrictions are apparently intended to limit the size of bomb the Japanese can send.
Companies holding business accounts with Japan Post should in principle be exempt, meaning international retailers operating from Japan will probably be completely unaffected, but small businesses and individuals are now unable to ship packages of any great size to the US in a timely fashion.
Other international postal services in Japan may have different policies (although many are already highly restrictive, refusing to ship figures and so on if they lack CE marks, software, adult items, etc.). The patient should also be able to make use of sea shipment options.
Similar air shipment restrictions in other freedom-hating countries are likely.
The background to the crackdown is that bombs disguised as toner cartridges were shipped to the US from Yemen, and as a result the Department of Homeland Security imposed sweeping restrictions on “certain inbound international air cargo shipments” thought to be high risk, which evidently includes those coming from Japan.
Fortunately, as a result of the policy Americans can now once more freely imbibe the heady air of liberty knowing that the homeland is again secure and it is even harder than ever for any subversive Japanese otaku goods to reach their shores.