Critics of the Obama administration's loan modification proposal say that it would not adequately address consumers' nonmortgage debt loads or the second liens on their homes, and that many borrowers would end up defaulting again.

The proposal, part of a broad housing plan unveiled last month, would subsidize principal or interest rate reductions that lower a monthly mortgage payment to 31% of the borrower's income. But there is no maximum for the total debt-to-income ratio a borrower may carry to be eligible for a modification. Nor is there any requirement or incentive for a consumer's other creditors to write down their loans.

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