The Federal Reserve unanimously approved new mortgage lending rules Monday in a crackdown on shady practices - particularly those involving subprime loans made to borrowers with weak credit.

The agency made several substantial revisions to the proposed regulations it unveiled in December. Many of the changes acknowledged consumer advocates' concerns that the rules still contained too many loopholes that would allow shady lending practices to continue.

But the Fed also made some concessions to industry executives, who feared increasing oversight would lead to less lending.

The new rules will apply to all mortgage lenders, not just those supervised and examined by the Fed. All but one requirement will take effect Oct. 1, 2009. However, board members said they will continue to work on further oversight of the mortgage industry.

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