How to change the wrongful termination law?

I was terminated in January 20 of this year. My question is when was the statute At-Will passed and which states? I use to love Texas but so far the laws here really SUCK. Things change times change I mean didn't it use to mean women couldn't vote. Don't employees deserve some kind of protection against employeers? Why was this law really created in the first place. People have a right to earn a leaving and not be fired for no reason.. it is so sad that a law protects employers when the whole reason they exist is because they have employees. What do I have to do to change this law?

Why you ask. I worked at a job and for 2 1/2 years I did fine never written up not even a sign of betrayal. I compained about how the girls treated me and it was easier for (the coward that my boss was) to fire instead of making it right--I was lied to for almost three years then out of the blue he says I don't have a future. Keep in mind I was licensed and had potential for much more and that seem to hurt me instead of help I am the only person who has ever been fired after acquireing a license.