The title "obervation" seems more-or-less valid, except that:

1) Not everyone making comments about US foreign policy (e.g., Iraq, etc.) is an American. The issues affect everyone in the world, and plenty of Brits, Irish, and other Europeans participate in the BS topics concerning US politics.

2) Many of the threads up in the music section that involve almost-completely-UK participation are about musical/social events, such as sessions and festivals and members's gigs. This is because more of the UK Mudcatters are in personal real-life contact with each other, thanks to their geographical proximity. Threads about musicology, lyrics, instruments, etc. ~ i.e., about music per se rather than musical events ~ generally have at least as much US as UK participation. Seems that way to me, anyway.