Legal Question in Employment Law in Pennsylvania

It is not "illegal" for a company to reject you because you are overqualified. This is more common in a bad economy when workers seek any employment they can qualify for because they want a job, any job. The employer, however, has a significant interest in finding an employee who will be satisfied with the position and stay long term. Usually, "overqualified" means, "We think you will leave as soon as something better comes along." That issue is better dealt with by strategizing how to address it in the application/interview process. It does not violate any law.

Also, be aware that internet searches for information about job applicants are becoming an increasingly common part of the vetting process. Companies are also becoming more vigilent about online "reputation management." A reputation management search might be broad enough to pick up this post on a public forum. Given that the prospective employer was impressed with you and keeping your resume on file, you may want to think about making such inquiries more discreetly.

This answer to your legal inquiry is based upon the limited facts stated in your question. Accurate legal advice is based upon an exchange between a lawyer and a client. The lawyer can then ask about other facts that may change or confirm the answer. Without that exchange, this reply should be considered limited in value. You should rely on this answer only at your own risk. Direct consultation with a lawyer is always recommended. Answering your question does not create an attorney-client relationship.