Mississippi lacks standing to enjoin, agency says. Massachusetts AG cites "bureaucratic ostrich headedness."
Legislation would delay flood insurance premium increases for up to four years.
Trade group cites "unacceptable financial burden" while reinsurers cast wary eye at blanket subsidies.
Measures would delay increases by perhaps four years if they gain passage.
State would join Florida, Mississippi in effort to turn back new rates from National Flood Insurance Program.
Federal banking regulators, including the NCUA, are proposing a rule aimed at encouraging flood insurance customers to buy private flood insurance.
Federal court plans Oct. 28 hearing in Gulfport on injunction to delay new flood insurance rates.
National Flood Insurance Program unaffected by shutdown as rate hikes kick in.
Injunction sought against FEMA as new rates kick in Tuesday.
Senate panel members backtracking on votes to support rate hikes in subsidized federal flood insurance program.