The Georgia House has adopted a resolution supporting the deepening of the Port in Savannah as well, as one across the state line in South Carolina.

The House endorsed the measure 167-3 on Tuesday. It already passed the Senate.

The rival ports in Savannah and Charleston, S.C. are both scrambling to deepen their harbors to accept supersize cargo ships. But Georgia's project is years ahead of South Carolina's.

South Carolina lawmakers in February approved a resolution again declaring their opposition to Georgia's plans to deepen the Savannah Harbor.

But the Georgia resolution's sponsor, state Rep. Ron Stephens, said deepening both ports would improve the whole region's economy.

The resolution is similar to one adopted by the Georgia Ports Authority in January pledging cross state cooperation.