I am having a hard time seeing when exactly Obama was supposed to be bench-pressing MPs into doing what he wanted them to do, given how he is not president of England. I mean, I'm sure Obama would have liked it if Parliament had voted his way, but other than calling up David Cameron and saying, "Dude, what the fuck?" I'm trying to picture how he could have influenced the vote and coming up with various things I'm pretty sure are illegal outside a Le Carré novel.
Quite possibly, Chuckles, the two wars you cheered for which almost immediately went tits-up have made your opinion (and Obama's, for that matter) invalid in the land of tea and scones. If we wanted to keep our allies happy, doing them the very great favor of listening to them once in a while over the past decade might have been a good place to start.