You should speak with an employment attorney. As a general matter, there is no legal protection for height under either federal or state law, so a question may be whether, or employment purposes, being short is considered a "disability," which is protected from discrimination. (Note: in the absence of specific legal protection, an employee may be fired for essentially any reason.) If being short would be a "disability" for this purpose, then the company would be required to make reasonable accomodations. Since many lawyers will provide a free initial consultation, I recommend you speak with an employment law attorney who will do so, to see if  you might possibly have a legal claim worth pursuing. Good luck.