With millions of homeowners still underwater, some local governments are considering a novel solution: condemning their mortgages through the power of eminent domain. “Federal programs have not been very successful at all, and the private programs have been of limited help,” said Gregory Devereaux, administrator for San Bernardino County, explaining the government's decision to consider eminent domain, a plan the mortgage industry considers the equivalent of the nuclear option. The hard-hit county's board of supervisors is expected to meet Thursday to consider proposals to help homeowners, including the possible use of eminent domain.