Ask Congress to change current Construction Lien Laws and/or Mechanics Lien.
Currently in most states if a homeowner has renovations and/or home repairs, example: Roof replacement.
Even if the homeowner pays the contractor in full and has a receipt that says paid in full, and the contractor does not pay, suppliers, laborers and sub-contractors, they can come after the homeowner and place a lien on the homeowner's property for payment; which means that homeowner may end up paying twice.
Also start prosecuting these predators for misuse of funds!