21. The most recent plan offers mortgage holders the opportunity to restructure their debts by swapping them for UDIs. 22. But analysts and worried mortgage holders say it remains unclear how much or how soon that will help. 23. Average investors and corporations face a variety of risks due to the inability of mortgage holders to pay. 24. If a property owner fails to pay the mortgage, the mortgage holder can foreclose on that property. 25. Still, he said the government would continue reviewing plans to help individual debtors, in particular mortgage holders . 26. The program also offers aid for mortgage holders who face problems meeting their obligations even after restructuring their debts. 27. Also, he had his $ 600, 000 home in a Houston suburb foreclosed by the mortgage holder . 28. When interest rates fall, mortgage holders tend to refinance loans, forcing investors to reinvest at lower rates. 29. If that were to happen, the mortgage holder would gain control of the property and could resell it. 30. Progress was stymied for years by various legal issues, including disputes by multiple mortgage holders and city liens.