For the year 2005 non-European riders are allowed to race the UCI European BMX Championships. That goes for the whole series in the Challenge and Challenge Cup series as well.
It sounds like Dale Holmes is going to do the complete series but he's actually from the UK but living in the States. Who he can drag with him for a race or two is unknown but the races do count for the UCI ranking and that list is becoming more and more important towards the 2008 Olympic games.
The race schedule looks like this:
Round 1 & 2:
23/24 April: St. Maxime, France
Round 3 & 4:
7/8 May: Klatowy, Czech Republic
Round 5 & 6:
4/5 June: Voesendorf, Austria
Round 7 & 8:
25/26 June: Cheddar, UK
Final rounds 9 & 10:
9/10 July: Echichens, Switzerland