Is there any one who filed aslyum from texas? 
how is the success rate?

 I know three of them, one got approved n two got denied. Lots of people say Republican state this n that but at the end of the day, it's you whose mere capability n honesty to influence the inspector totally depends upon. I ve heard people rejected in California too. So if u think u have confident then really don't matter what state it is. Just my personal view.

 @ gorikopoi, thanks
Is the process to file asylum same everywhere in united states?

 yeah my man it's the same damn thing. they have certain locations though to file asylum like if u are in mideast u have to go Nebraska, if u r in west coast california, east coast then Newyork, i don't know about south my man, may be the office is in Dallas or Houston, help yoursef by googling, you will be alright. wish u a good luck.

 very slim. NY and Cal is the best.