I had to dig deep on that one. It was a great followup question.
Texas includes all sourceds of income except for the GI bill and other allowances in order to determine child support. In regard to military disability and VA disability, the court may use this to the extend that it reduces expenses in helping to set your minimum child support paymets. However, with regard to child support enforcement. That is the garnishment of the wages or direct payment, The following income is specifically exlcuded. The regulation refers to these as income that cannot be intercepted.
So lets modify the answer to your original question.
1. Texas can use the amount of your VA disabilty to the extent that it reduces expenses to help determine child support., BUT
2. are correct, that it cannot be intercepted to pay child support.
If this link does not work, it is supposed to go to the PDF version of Federal Child Support Enforcement handbook. A very valuable resources that you will like.
NOTE: It is not the condition of being a government check. It is the condition of being the type of payment you receive.
The government check thing that you friends refer to comes from a thing called authorized payee. Persons who are not authorized direct pay are not authorized to receive a payment from a government check. But, former spouses are authorized direct payment. So this does not apply. According to the handbook, only the VA disability, montgomery GI bill, and payments designated by the federal agency administering the payment can exclude the pay from interception. Military Retired pay is a government check, but is attachable for child support, for example. I had missed that it was a VA retirement pay earlier. I apologize.