Because, despite there being citizens of both German-American during WW2, they knew that there was a low risk of these people (of course there were also those for which they suspected might be secret spies) being accomplices of the Third reich. A lot of these people were also scientists who fled the atrocities of hte Nazi regime before the war.
Answer: 3rd one
Explanation: They wanted to eliminate the competition and in turn have a stronger bond.
<span>Rob Reiner probably had Errol Flynn in mind. He is a classic star known for his swashbuckling movies, good looks and British accent. Cary Elwes, the star of Princess Bride, even evoked this similar personal and type in playing Robin Hood: Men in Tights, a Mel Brooks spoof, where he comically played Errol Flynn's character and persona from The Adventures of Robin Hood.</span>
