December 2015 was a pivotal month in many respects. During the first week of December 2015, Donald Trump began to establish a substantial lead over his Republican primary opponents. Vice President Joseph Biden traveled to Ukraine to announce, on December 7th, a $190 million program to “fight corruption in law enforcement and reform the justice sector,” but behind the scenes explicitly linked a $1 billion loan guarantee to the firing of Ukrainian prosecutor Viktor Shokin, who had been investigating the energy company Burisma, which employed Biden’s son Hunter. On December 9, 2015, the reported whistleblower Eric Ciaramella held a meeting...