Contrary to news reports, NASA has not officially or unofficially been discussing the purchase of H-II Transfer Vehicles (HTV) — uninhabited resupply cargo ships for the space station — from the Japanese Space Agency, or JAXA.
NASA is committed to domestic commercial cargo resupply to the space station and does not plan to procure cargo delivery services from Japan. As part of our original agreements as compensation for common system operating costs NASA has limited cargo capability on the Japanese and European cargo vehicles. NASA has recently issued a request for proposal for the cargo needs of International Space
Station beyond those supplied by our current international agreements. NASA has chosen to depend on commercial resupply of cargo delivery to the station.