Former Vice President Joe Biden has used Barack Obama's beloved status among Democratic voters to insulate him from criticism from the massive field of candidates jockeying to be the next president. But in recent weeks, the Democratic frontrunner has had that legacy used against him, with his competitors pointing the to shortcomings

The Obama administration secretly sought to give Iran access - albeit briefly - to the U.S. financial system by sidestepping sanctions kept in place after the 2015 nuclear deal, despite repeatedly telling Congress and the public it had no plans to do so.