It emerged out of backlash to some particularly roughly timed large profile strikes that happened during WWII, and with the Cold War blooming, and no one knowin

It emerged out of backlash to some particularly roughly timed large profile strikes that happened during WWII, and with the Cold War blooming, and no one knowing if it'd ever go hot, Congress shoved that one through to "ensure the U.S. would never be held hostage by communist rabble rousers again." To be frank, it's a shining example of why every legislation needs a sunset date. One and done legislation is just a tyranny happening in slow motion without active efforts to measure and assure continuing assent to the status quo by the governed.