While I'm sure they all feel they've been working, GlitterandGlue, the point is there are a bunch of BBC journalists over there semi-permanently who have already made the contacts, know the policies, problems, and possibly get more of the gossip from other US journalists than someone flown in would manage to get during a brief stay.
Same thing happens for various R4 news shows, whether Today, World at One, or World Tonight - there's some 'event' and next thing you know, one of the London team is off for a few days in Gaza, or Istanbul, or wherever, depending on the "local reporter" who has built up intelligence over many months. Sure, those trips are less fun, and I would not wish to go off somewhere hot and dusty, with a chance of kidnap (as a journalist) or worse, but the point is there seem {to me} to be lots of un-needed trips at BBC expense.
I imagine I'd feel more than a little "miffed" if Humphries flew in for a couple of hours on air, having collected sound bites from 20 people I'd spent weeks getting to know, along with their views on the local issues. He (Humphries) goes on air as if he's worked miracles to get some tasty vox pops yet I bet he knew as much as his London team did the previous week, ie 10% of what he has learned in the last 24 hours from my contacts.
I'm not against there being reports from abroad, but there are some trips that appear to be 'for the sake of it' like music awards, film awards, and how much time does the guy from Front Row spend in New York to meet actors and watch Broadway productions?
Radio 1 goes off to Ibiza, and so on, probably with 5 hangers-on when you have some person like Moyles and his "posse" (sorry, out of touch, don't listen, but bet he has a bunch of 'yes' people to bounce 'jokes' off, not like the days when the DJs needed no back-slapping sycophants).
If you have ever listened to Feedback on R4, G+G, you'd know that despite endless public criticism, the producers, editors and more senior staff are so blinkered they hardly ever accept criticism, but justify their choices with "we felt it was best" {and damn the public}.
That woman a while ago (controller of R2 and 6Music), who chose Russell Brand, only resigned (eventually) after Ross and Brand embarrassed her badly (another of her choices was Chris Evans for the drive slot on R2, which displeased a majority at the time).