Please explain!

3. John and Beth were hired by Ace Construction to work on a construction site in Manhattan building a parking garage. At the time, Ace Construction had more than 350 employees. Both John and Beth signed written contracts with Ace Construction. Each contract explicitly provided that \"employment is terminable at will by either party.\" John, who was born outside the U.S., was red. He was told by the owners of the company that he was being let go because the company wanted to be as patriotic as possible, including in their hiring decisions, and therefore only wanted to employ people born in the US. Beth was used to working on construction sites. She had a lot of experience and was very skilled at her job. After she had worked on the job for two months, she learned that the men on her team made $15 per hour more than she did. Her job description and job responsibilities were the same as the men on her team. She complained to her supervisor that the wage differential was based on gender discrimination. a. Is Ace Construction's termination of John legal? Explain. b. Does Beth have a claim under the Equal Pay Act of 1963? Explain