Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. NYT: Bolton Book Says Trump Held Up Ukraine Aid for Biden Investigation VOA News As U.S. President Donald Trump's lawyers continue their case in his impeachment trial, a yet-to-be-published memoir by John Bolton could blow up one of their major defenses. The New York Times reports that the former national security adviser writes Trump personally told him that he is withholding $391 million in military aid to Ukraine until it announces an investigation into Democratic presidential contender Joe Biden for alleged corruption. The newspaper cites several people who have seen the Bolton manuscript as its source. House Democrats contend Trump froze the congressionally-mandated aid to Ukraine, along with a desired White House visit by President Volodymyr Zelenskiy, on the promise of a probe of Biden and a debunked theory that it was Ukraine, not Russia, which interfered in the 2016 U.S. election. .