Cross Border Wires — WritingUS payment rails integrationhttps://crossborderwires.com/Your SEPA-shaped API can't send a US payment — and where the rails seam really liveshttps://crossborderwires.com/writing/your-sepa-api-cannot-send-a-us-payment/https://crossborderwires.com/writing/your-sepa-api-cannot-send-a-us-payment/Why a European bank's public API almost never has a place for a US-domestic payment, what that means for a US rails integration, and the one design decision every US entry path shares.Tue, 22 Sep 2026 00:00:00 GMTus-railsISO 20022 is a data project, not a format swaphttps://crossborderwires.com/writing/iso-20022-is-a-data-project/https://crossborderwires.com/writing/iso-20022-is-a-data-project/Every major US rail now speaks ISO 20022, and most migrations still get it wrong the same way: structured fields, unstructured data. Where the real work lives and how to sequence it.Sun, 12 Jul 2026 00:00:00 GMTiso20022