Former Presidents Biden, Clinton and Bush are set to attend the opening of the Obama Presidential Center, according to a new report. The Chicago Sun-Times reported Wednesday that the three presidents intend to be at a ceremony to commemorate the center’s opening, a source familiar with the event told the outlet. Former first ladies Laura Bush, Hillary Clinton and Jill Biden will also be in attendance, per the Sun-Times. The Obama Presidential Center is set to open Thursday, with its grand opening ceremony featuring a lineup of award-winning performers. Valerie Jarett, the Obama Foundation’s chief executive, said that the event...