It's also legal to fire you for any reason at any time, or no reason at all. It's legal to reduce your pay because "I don't like you", it's legal to change your schedule with no notice, it's legal to reduce your pay to minimum wage because I don't like your political views. It's legal to make you park far away because your car is a piece of crap, and its legal to make you move your office into the basement, AND take your stapler.
You have recourse - quit. Be thankful you still have a job - we're down about a million in this country right now.
It's illegal to do any of those things above if the real reason is "you're hispanic", or "you're a woman" or "you are old", or any protected characteristic. The deck is stacked in the companies favor, the burden is on YOU to prove discrimination.