Peter Schweizer, author of the bestselling "Clinton Cash," is headed to Capitol Hill this week to tell senators and House members about his new book, out March 20, "Secret Empires: How Our Politicians Hide Corruption and Enrich Their Families and Friends."

Why it matters: According to publishing sources, "The book will expose vast corruption by top Washington figures who leverage their political power to enrich their family members and friends, often by helping grease deals with foreign entities."

More from publishing sources:

• "The book is under a strict embargo, however sources reveal members of both parties will get a full Schweizer drill-down, including current members of Congress, high-ranking Obama officials, and the Trump family. "

HarperCollins says "Secret Empires" will have a first printing of 150,000.