President Obama is revamping his biggest refinancing program in another effort to reach more homeowners locked in high-cost home loans.

The Home Affordable Refinance Program (HARP), part of the president's foreclosure prevention effort, was supposed to get 5 million borrowers into cheaper and safer mortgages.

But so far, fewer than 900,000 properties have been refinanced through the program, mostly because homeowners weren't allowed to borrow more than 125% of the value of their homes. Read more at Interest.com.