Employers are free to post job openings and pull those openings at any time. You'd only have a claim if the hiring decision was based upon your race, color, national origin, religion, gender, or age despite your qualifications for the position. For more info, see the link below from the Ohio Civil Rights Commission.
Alexander P. Montgomery
Cornetet, Meyer, Rush & Kirzner, Co., LPA
No attorney-client relationship implied or accepted without a signed fee agreement. This response is theoretical only and for purposes of discussion. Attorney is not liable for any opinion expressed herein. Attorney is licensed in Ohio only.