May 22 2019 Tiffany Trump, the president's fourth child, attended the 72nd annual Cannes Film Festival in the South of France with her boyfriend over the weekend. As is true with all of the president's five adult children, her latest trip also comes with a charge for a Secret Service detail. Tiffany Trump is a rare participant in official events. The president's immediate family is eligible for Secret Service protection while he is in office. GAO says taxpayers could save billions if they took a programmatic approach rather than each nuclear waste site setting its own priorities. DOE provided technical comments, which were incorporated as appropriate. GAO also highlighted an open recommendation to Congress that could save taxpayers up to $4.