Washington (AP) - Citing enormous backlogs and high rates of declined loans for hurricane victims, a House Democrat on Wednesday called on the head of the Small Business Administration to quit immediately.Rep. Nydia Velazquez, the top Democrat on the House Small Business Committee, said a flood of missteps by the SBA this year make it clear that Hector Barreto isn't capable of leading the agency. Barreto, said the New York congresswoman, "has simply run SBA straight into the ground." Velazquez said that since the hurricanes roared ashore in August and September, the agency has declined 80 percent of disaster loans...