Originally Posted by
bombayhog
Thanks for that clarification (and to the previous poster for pointing it out). So, looks like I'll either need to originate in LHR or head back towards the US via LHR. Not a huge problem, though I hope it won't add significantly to the taxes.
If you don't need to go back to Europe, you can do the AMM-ORD flight. Saves a segment as well.