This country was founded on the idea of equality for rich white men. Equality for everyone is still a work in process.
And it may be a fundamental right, but there are a lot of fundamental rights that the federal government won't step up for because it's just one slippery slope away from absolute power.
I'm not trying to presume to know you, just saying that no one should presume that the country is going to have the balls to change the constitution until each and every individual state does.