Biden backers have complained that the details about the China journey and Ukraine matter had been overhyped by Republican researcher Peter Schweizer in his 2019 guide, “Secret Empires: How the American Political Class Hides Corruption and Enriches Family and Friends.” Democrats level out that Schweizer runs a nonprofit that has been funded by a prime Trump donor and they are saying that “Secret Empires” is a replay of his 2015 “Clinton Cash,” a guide that fact checkers took some challenge with because it was embraced by Trump in an effort to paint Hillary Clinton as corrupt.