("Søren" wrote)
I am danish and moving to Chicago. I fly ultralight under danish
regulations (similar to the rest of europe). What kind of licence is
required to fly a 2-seater, 1000 pound airplane in the states?


It's called Sport Pilot (SP)
www.sportpilot.org

You will also see people refer to it as (LSP) for "Light-Sport Pilot" and
(LSA) for "Light-Sport Aircraft". LSP/LSA

Maximum:
Takeoff weight: 1,320 lbs (599 kg.)
Stall speed (clean, unflapped): 51 mph (45 knots)
Speed in level flight with max continuous power:138 mph (120 knots)

Two-place (pilot and one passenger)
Single, non-turbine engine
Fixed or ground adjustable propeller
Fixed landing gear

Day VFR flights.

No medical required.


Montblack
Mom is 1/2 Danish on her father's side.
My niece went to Denmark for her entire senior year, when she was 17.