Can an employer refuse to hire because you don't qualify for thier health insurance plan?

Ok, so under current law (until changes take effect anyway) health insurance companies can deny an individual coverage due to a pre-existing condition. I know that companies who employ over a certain number of people (I don't know the exact number) are required to offer their employees health insurance. So therefore can a company refuse to hire an individual because they don't qualify for that employer's respective health insurance plan due to their physical condition?
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First, employers are NOT required to offer health insurance. Second, at the time of hire, the employer would have no way of even knowing if you "qualify" or not. Most group employer plans are REQUIRED to accept all employees - although they may exclude certain specific preexisting conditions.
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