Not likely on the taxes, however child support depends on two factors.
see links below
If the debt relates to tax arrearage and/or child support then yes, SSD benefits can be garnished via a court order. SSD cannot be garnished for creditor debt.
no
No, the debt is all his.
SSDI check cannt be garnished for debt, unless it is a student loan, child support or taxes payment.
Debt consolidation schemes are almost never a good idea. Also, keep in mind that there is no statute of limitations on collecting unpaid child support, and unpaid support is not discharged in bankruptcy.
Child support debt cannot be charged off in a bankruptcy.
No.
You will need to check with a lawyer in your jurisdiction, as the nature of failure to pay child support debt varies from state to state. At the very least, I suspect that you can have a lien placed against your property/home for the amount of back child support (i.e. liens indicate debt owed when the property is sold). I would find it very unlikely that a child support debt would allow for forced sale of a primary residence, though I could easily see that forced sale of "investment" property to satisfy a child support debt could be possible. Once again, please consult and actual Family Law attorney.
You need to review your particular child support order for the terms and length of your obligation. If you owe back child support the debt remains until it is paid.
Whether you can eliminate a debt that resulted from a divorce decree will depend on the type of debt. If you owe child support or alimony from a divorce then you will not be able to eliminate the debt in bankruptcy. If the divorce assigned some debt to you as part of the divorce and it was not assigned as child support or alimony then you may be able to eliminate the debt in a Chapter 13 bankruptcy. Chapter 13 bankruptcy allows you to eliminate debt assigned to you that is in the nature of a property settlement and not child support or alimony.
shure why not
It can be garnished by the federal government. Federal student loans, IRS debt, ect. Also if you owe back child support or alimony payments, it can be garnished. However, it cannot be garnished by regular creditors.