From the political perspective of the White House, Hurricane Katrina destroyed more than an enormous swath of the Gulf Coast. The storm also appears to have damaged the carefully laid plans of Karl Rove, President Bush's political adviser, to make inroads among black voters and expand the reach of the Republican Party for decades to come. Many African-Americans across the country said they seethed as they watched the television pictures of the largely poor and black victims of Hurricane Katrina dying for food and water in the New Orleans Superdome and the convention center. A poll released last week by...