AP sources: Ex-Iowa Gov. Tom Vilsack plans to endorse Biden

Former Iowa Gov. Tom Vilsack plans to publicly endorse Joe Biden for president at a rally on Saturday, two people close to Biden’s campaign told The Associated Press.The former two-term governor, who served with Biden in the Obama administration as U.S. secretary of agriculture, and his wife, Christie Vilsack, plan to appear with Biden and his wife, Jill, at a morning rally in Des Moines.The backing from Vilsack comes as Biden, once the early favorite in the state with the nation’s f