It's a world-wide sport :) The US sports have never made it abroad. Hardly anybody plays the american football, baseball made it to Japan, basketball is a thing in many countries - it's by far the most successfull.
Canadian ice hockey conquered the northern half of Europe plus Italy, curling is quite a thing in several countries too.
Yeah they tried the WAFL in Europe which I believe was supported by the NFL. It failed miserably.
Of course, it was effectively a minor league program since it was not top players.