The House Appropriations defense subcommittee has voted to fund the F136 alternate engine for the JSF (see also here) which runs full face into the implied threat of an Obama veto (SecDef Gates has said that he would recommend a veto, but that is different from Obama himself threatening a veto).
I’m of mixed emotions on this matter.
I think that the F-35 is over priced, behind schedule, and useless for any likely future war, but I remember the history of Pratt & Whitney’s F-100 before GE started competing with them with their F-110 engine, and it was not pretty, so I think that the engine is a good idea.
I think that the Pentagon is worried that any dollars spent on this will drive up the front end costs, making it more likely that the program will be canceled, and they are willing to eat the additional costs of P&W being the soul source on the back end.