Taxpayers could be left with a big tab if the Obama Presidential Center experiences financial trouble because its foundation has not yet established a promised $470 million safety net to guard against a public bailout. That according a Fox News Digital investigation of the center’s finances as Chicago awaits its grand opening on Friday, June 19. The outlet’s investigation, published Saturday, found that “multiple contractors and subcontractors claiming losses ranging from hundreds of thousands of dollars to millions on the project, with some alleging they remain locked in payment disputes and face financial ruin…” In an agreement with the city...