Lindsey Graham

Along the coast, residents prepared for a second round of flooding as rivers swollen from days of devastating rains make their way toward the Atlantic. In the Columbia area, where some returned home to assess damage and clean up, the threat of more flooding still hadn't lifted.

About 1,000 residents near the compromised Beaver Dam were told to evacuate Wednesday morning, though the order was lifted several hours later when crews shored up the dam.

Along the coast, residents prepared for a second round of flooding as rivers swollen from days of devastating rains make their way toward the Atlantic. In the Columbia area, where some returned home to assess damage and clean up, the threat of more flooding still hadn't lifted.

About 1,000 residents near the compromised Beaver Dam were told to evacuate Wednesday morning, though the order was lifted several hours later when crews shored up the dam.

Graham was critical of Trump's recent derogatory comments about Mexican immigrants and calls the issue a "defining moment" for Republicans. He says on CNN's "State of the Union" that if the GOP doesn't reject Trump's views, "we will have lost our way."

In a weekend appearance in Phoenix that drew thousands, Trump repeated his assertions that Mexico was sending violent offenders to the U.S. to harm Americans.