The efforts of the White House, in concert with the Federal Housing Finance Agency, to jumpstart the underperforming GSE refinance program is almost certain to disappoint when final details are made public, due in no small part to overpromised and inflated expectations, say mortgage market watchers.FHFA Acting Director Edward DeMarco said his agency is “carefully reviewing” the two-year old Home Affordable Refinance Program with the White House in order to help a greater number of underwater Fannie Mae and Freddie Mac borrowers into lower-rate loans.