All of the following federal employment laws protect the rights of employees to be free from discrimination in their compensation EXCEPT:

The Affordable Care Act (ACA) does not primarily focus on discrimination in compensation, but rather on expanding healthcare coverage and improving the quality of health care in the United States. While it includes provisions related to healthcare access and affordability, it does not specifically address issues of pay equity or discrimination in compensation practices.

In contrast, the Equal Pay Act directly mandates that men and women receive equal pay for equal work, aiming to eliminate wage disparity based on sex. Title VII of the Civil Rights Act prohibits employment discrimination based on race, color, religion, sex, or national origin, which includes provisions related to compensation discrimination. The Age Discrimination in Employment Act (ADEA) protects employees from discrimination based on age, which also affects how compensation may be determined across different age groups. Each of these laws is specifically oriented towards ensuring fair treatment in compensation practices, making the ACA the option that does not align with this objective.