A new loan quality initiative from Fannie Mae is making it harder for home buyers and refinancing homeowners everywhere to close on a mortgage.

Beginning June 1, 2010, with all new applications, Fannie Mae wants lenders to verify that borrowers have not taken on new debt during the underwriting phase of the mortgage.

If new debts are found, the mortgage is subject to a re-underwrite and a possible turndown.

For Fannie Mae, the goal is to reduce the number of loans that go bad because of new, non-disclosed debt. Lenders have the freedom to verify in whatever manner they wish, but in most cases, the verification process will amount to a credit re-pull made just prior to closing.

The underwriters will be looking for 3 things in particular — even after your loan is approved.

First, your updated credit report will show your current credit card bills and minimum monthly payments.