Earlier quoted context omitted.
Define "force". If you mean "hold you against your will", they can't do that. If you mean "you have to do it to stay employed", they can. The question here is how pay is calculated. It's not whether the security checks themselves are a problem.
> The question here is how pay is calculated. Yes. Specifically, whether your employer can make you do work that they don't define as work and therefore don't pay, even though it has all the characteristics of work: Being where they tell you when they tell you doing what they tell you.
That's why this is being fought with state law, not the constitution. The federal law is doing something stupid, but the stupidity is mostly an accounting trick. Everyone is still getting paid for their total labor.