hot222 said:
I don't believe that US have ever bought an aircraft from another country (if someone knows, please speak) exept maybe Canada...(?)
at least major 2 instances:
1) F-21's are used for aggressor training at Nellis
2) 24 x Mig 29's were bought from Moldova and used for test and evaluation
btw, Spanish transports are being considered for Light Transports roles, and the Presidential helo Marine 1 (plus all others) are not US indigenous. They set up the production line in the US so as to comply with DoD criteria. They are however foreign aircraft.
IIRC US Federal Law requires US construction and built in CONUS for new frames.
edit add-on:
forgot to add (apart from EH 101) the US also usess license built HH-65A's (Dauphins/ aka Dolphins)
they also used modified Canberra bombers for recce work after the success of the RAF in running ferrets into the Soviet Union (and after they had some B-45's shot down due to lousy performance)
unmanned aircraft include the Australian Jindivik.
there are a few more in the air transport and ewarfare role but I'd have to do some research to prompt failing memory.