Former New York police commissioner Bernard Kerik, who helped rally the city's police force and citizens following the Sept. 11 terror attacks, is President George W. Bush's pick to run the Homeland Security Department. Bush was formally announcing the Kerik selection on Friday, a senior administration official said. Bush on Thursday also announced that Nebraska Gov. Mike Johanns, 54, was his choice as the next agriculture secretary, replacing Ann Veneman. As Bush lines up his second-term team, seven members of his 15-member Cabinet have submitted their resignations. The 49-year-old Kerik's path to the top homeland security position, where he will replace Tom Ridge, was unconventional, but he campaigned arduously for Bush this year.