The Charleston landmark could fall into the sea if its base isn't stabilized. The cost to fortify the foundation is estimated at more than $3.17 million, and the state already has agreed to chip in $1 million.

U.S. Sens. Lindsey Graham and Jim DeMint, both R-S.C., announced Thursday that they tucked a provision into the 2006 Energy and Water Appropriations bill giving the Army Corps of Engineers the rest of the money for work on the 129-year-old lighthouse.

Still, the money isn't a sure thing: The bill must be approved by the full Senate and survive House and Senate conference committee votes.

The project is being pushed by Save the Light, a nonprofit group that is seeking public and private dollars to stabilize and repair the lighthouse. Jack Corgan of the group said Thursday, "We're cautiously optimistic."

Graham spokesman Kevin Bishop said the senator also is optimistic "but the budget process is a very long process. He's going to work his hardest to keep it in there," Bishop said.

DeMint spokesman Adam Temple said DeMint also would work hard to keep the $2.2 million in the bill. "It's a high priority," Temple added.

State Rep. Wallace Scarborough, a Charleston Republican who worked to get the state money through the state Legislature, said he was thrilled with the news from the senators. "They have come through for us," Scarborough said.