I suspect that once the Mobile assembly plant opens, they will see less cancellations owing to increased production. After all, they could build the 260 American (280 option) , 100+ JetBlue, 30 Delta, and 20 Spirit A320 family orders here in the US.
BTW - JetBlue has already confirmed they will receive the first US assembled A320:
BTW - JetBlue has already confirmed they will receive the first US assembled A320:
http://articles.chicagotribune.com/2013-04-08/business/chi-jetblue-to-get-first-usbuilt-airbus-jet-20130408_1_second-airbus-a320-assembly-line