Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.601 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)
"Unfortunately US isn't one of their partners."
That's true, but Aeroplan and ANA are MR partners, and their miles can be redeemed for travel on US (at least until US departs Star Alliance).