If we did not grab them and put them to work for us, the Soviets would have done the same. They did do the same with all the ones they could get their hands on. We were in a Cold War with totalitarian Communism and we had to win at any cost. If that meant employing some scientists who had happily worked for the Nazis, so be it.
That's as pathetic an excuse as "We were only following orders."
I was born in 11947. Lived through air raid drills in school, along with being told every day we were going to be attacked. That propaganda was no different than the shit they told everybody about Covid, and the excuses they are using to send billions of dollars to Ukraine. Guess what? We didn't win the war against communism, or fascism despite using Nazi scientists and war criminals against our enemies, because both isms are alive, and well, and thriving in this country today. And last thing I knew, despite all the fear of the past, Russia still hasn't dropped a nuclear bomb on us, but with the bullshit going on in Ukraine, I couldn't blame them if they did.