Yes. You can go to jail for violating any court order. File a motion to modify the order.
Ms. Laster practices in Dallas, Denton, Collin and Tarrant Coun
It depends on what kind of spousal support has been awarded. If the spousal support is statutory then it can be enforced like child support, which includes incarceration for contempt for failing to pay child support when you can. However, if the spousal support was an agreed-to amount then it may be contractual support and only enforceable under a breach of contract remedy through a civil suit.
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