Because he was not there. He has been living in Arizona, not Texas. Of course the alleged witness that called CPS, the 16 year old girl that nobody can find, would have known in her "calls to an unnamed family violence shelter" that the guy listed in the warrant has not been living there and reports he does not know any such person. Arizona authorities also report that he has been living in Arizona.
But whomever did make the calls to "an unnamed family violence shelter" not CPS as was first reported did not know he is actually living in Arizona. What that actual facts are so far is the guy in the warrant doesn't live there and the witness that called it in can't be found even though she is supposed to be living there as well.
Pretty thin for a warrant and a good lawyer could have a field day with this.
Even in the early days of LDS polygamy, men had wives set=up in different towns. I’m always surprised by posts like yours that suggest that because a man has a residence in a different State, he cannot simply be making circuit visits to his young wives deposited at various sites in the West (and even Canada).
Then again, I come from a long line of Mormon polygamists, and so I understand it pretty well.
And don't forget that those lawyers that are hired will be paid by the welfare generated bank accounts that all those single mothers/illegitimate children produced over the years.