Do you mean does ok in nfl or rugby dsat? In the late 80s early 90s, a french rugby guy Richard Tardits played both games at top level. He was a french u20 international in rugby, went to the us for his studies, got drafted and played for the Patriots in the nfl.
After this, he went back to rugby and became an international player for the us in rugby 7 and xv (played the 1999 rwc).
I dont think rugby will ever be massive over there but there is room for improvement.
If Ribery can speak some German, anyone can learn and speak a foreign language. Just sayin!
"However, one thing American sporting fans put above everything else is national pride and seeing their teams excel on the world stage."
Correct but wouldnt say the Americans are the only ones like this. Look at the big SH 3: afl, league, rugby and cricket the most popular sports by far. Also the few sports where they excel at or even play (same as USA and mls, nfl ). Imo thats a new world thing, these countries need to exist on the world stage through sport. If they arent good enough, the wont like it. Thats why football, basket, hand, volley, athletics, cycling etc are only minor sports here. The new world loves a winner, its reassuring i guess. Fair enough.