Can my wife's bank account be seized or her wages garnished to pay my federal criminal restitution?

Are you on the account? If so probably yes, for at least part of the balance. See an attorney.

The problem is, you live in the community property state, meaning, essentially, that your wife's income is community income and at least 50% of it can be made liable for the community debt (your debt). So yes, in theory, they can reach your wife's income. However, they must allow for your reasonable and necessary living expenses. Thus, have your wife call the person on the wage garnishment notice and explain the situation. She may have to fill out some forms to show her total income and all the living expenses. If your family truly cannot afford to pay this debt, the government should release the garnishment. Good luck!