President Bush yesterday nominated the acting director of the Federal Emergency Management Agency to be its permanent chief, ending a seven-month search that had become an embarrassing reminder of the government’s flawed response to Hurricane Katrina and doubts about proposed administration reforms. R. David Paulison, 59, formerly U.S. fire administrator and head of FEMA’s division of preparedness, succeeded former director Michael D. Brown, who resigned Sept. 12, two weeks after the storm struck. Full Story