QUOTE(Nilz07 @ Jan 16 2008, 11:50 AM)

QUOTE(Converse34 @ Jan 16 2008, 11:22 AM)

If you truly want a one way, book the cheapest roundtrip you can find (return date doesnt matter) and then just not use your return portion. If you are forever doing round trips from the UK, it makes it harder once you are in the US to plan and book tickets.
Would I get asked any questions at POE for having a return ticket? Also would there by any sort of penalties that airline/immigration have for not using the return portion.
Nope to both. First off, you're CR1/IR1 -- you'll have NO restrictions on leaving the US once you enter as you'll get the I-551 stamp, which is equivalent to a temporary green card until the physical card arrives. Second, the airline doesn't care if you use the second part or not -- they've sold a ticket, it's up to you to use it. If it makes you feel more safe, call them before the departure date to let them know your plans have changed and you won't be travelling. Immigration won't take note of your departure date either as you are a permanent resident as of the moment they process you, and not subject to the amount of time you can stay in the country (like a citizen).
Edited to add: Of course if you didn't use the FIRST portion of a return ticket, your entire flight would be cancelled, but that's not the situation in this case.