Yeah, it's literally the same as the title on the page so I get it, but unfortunately it's a hot-button political issue and people are eager to misinterpret.
I'd suggest something like: "Japan Post stops accepting US shipments over $100."
FWIW I came in from RSS and am glad to see the better title. Maybe not ideal, but as someone living in Japan, I can see what the official title was trying, but failing, to convey. But it is what it is and probably the best in this case. The move itself seems good on both sides since proper logistics from Asia to US has been strong for a long time, there shouldn't really be a strong need for personal shipment of goods.
I'd suggest something like: "Japan Post stops accepting US shipments over $100."