Portmanteau reply.
I really doubt that your DD's lecturer is on a paid lecture tour of the US. It's far more likely to be an unpaid conference presenting his/her research, for which if the lecturer is lucky the university will stump up part of the costs.
To be considered research active, lecturers generally need to attend conferences as part of their work. I attend at least 3 international conferences a year US, Europe, (Hong Kong later this year) and so on. I get a "generous" expenses allowance for research of a bit over £1,000 because my current workload is officially at least 25% over the standard workload points in my institution (and that's just the official calculation), but that does not actually cover even the costs of just one international conference (flights, transfers, hotel, food, registration for conference usually around £200, and so on).
Re the new fees: when someone says upthread With all of those student fees coming in, you would think they would pay the lecturers decent salaries it really drives me crazy. Sorry, not personal against that poster! -- just an indication of how little anyone outside of universities understands the privatisation of the university system a couple of years ago.
The fees that students pay are simply a replacement (and actually not quite enough of a replacement) of public, taxpayer-funded funding which was removed (except for a 20% retention for STEM subjects & some coverage of Modern languages). So 80% of public funding was removed from teaching activities in English & Welsh universities, to be replaced by a student-funded tuition fee. There is NO MORE MONEY. Indeed, the new system actually funnels less into the chalkface, and will actually cost the government more in the long run. Go figure (and neo-liberal economics is not ideologically driven? Give me a break).
Academics do not get more money. Also remember, most academics on a standard academic contract are on what's often referred to as the "three-legged" contract: teaching, research, and administration. Our employment contracts require us to do these three things (I'm a really highly paid file clerk on occasion), and our income and employment security (we don't have tenure in the UK) is dependent on meeting what are now very high standards. My mainland European, Australian, and American colleagues now gasp at the workload that a lot of really excellent academics have now in the UK.
OK rant over. I now have to travel to another conference, for which I am paying my own expenses, because it's an important small select international meeting in my field ... Luckily it's just in the south east of England, so only 3 hours travel.