Former Sen. Fred Thompson has taken his first step toward organizing a campaign for Iowa's leadoff presidential nominating caucuses by hiring a top Iowa Republican campaign staff member, aides to Thompson confirmed Monday. Thompson has signed Andrew Dorr to serve as his Midwest political director should the actor and Tennessee Republican run for the Republican presidential nomination in 2008. "This is the kind of stellar team Senator Thompson is attracting as he continues to move forward in his determinations," Thompson spokesman Mark Corallo said. "It means Senator Thompson will be ready, should he decide to run, and will have the...