Sony has confirmed that there will not be an American release of the UMD Passport Program. The program was launched in Japan alongside the Vita, allowing users to register games to their PlayStation Network accounts before paying a small fee to re-download them.
Unless Sony offers another option, it will leave North American PSP owners with no way to use UMD’s on Vita (short of purchasing the title again). Whilst no official comment has yet been made, I can assume the same will be true for Europe. The Vita launches in the US and Europe on the 22nd February.