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iring a medical marijuana user after a positive drug test may seem straightforward — until a federal court explains why it isn&r
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o;t. TL;DR: A Pennsylvania federal court denied summary judgment to a farm-supply retailer that fired a medical marijuana cardholder after a positive post-injury drug test, holding that Pennsylvania’s Medical Marijuana Act is not preempted by the federal Controlled Substances Act. The employer’s argument that employing a marijuana user would