Director of National Intelligence Tulsi Gabbard just released a trove of apparently once-classified documents — with promises of much more to follow. The new material describes the role of the Obama administration’s intelligence and investigatory directors — purportedly along with former President Barack Obama himself — in undermining the 2016 Trump presidential campaign. In addition, their efforts extended to sabotaging the 2016-2017 presidential transition and, by extension, the first three years of the Trump presidency. The released documents add some new details to what over the last decade has become accepted knowledge. Congressional committees, special prosecutors, and the inspectors general...