(AP) A bipartisan group of lawmakers Tuesday unveiled legislation that would delay for about four years several changes to the federal government’s flood insurance program that are threatening to sock thousands of people with unaffordable premium hikes.

The move comes as the government is beginning to implement a significant overhaul of the much-criticized program. That overhaul passed last year with sweeping support. The revamped program was backed by both liberals and tea party conservatives but has caused a panic in places like Staten Island, N.Y., and the New Jersey coast and in flood-prone areas of Louisiana, Mississippi and Florida, where higher rates threaten to push some people out of their homes.

Some of the most ardent supporters of delaying the premium increases are conservative Republicans from Southern states, where the new rules have sent some home values plummeting because of uncertainty over insurance rates and because subsidized rates can’t be passed along to buyers. New flood maps threaten to saddle some homeowners who are paying a few hundred dollars a year now with annual premiums of more than $20,000.

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