Early on Friday, an intruder broke into the San Francisco home of Nancy Pelosi and bludgeoned Ms. Pelosi’s husband, Paul, with a hammer.The shocking attack underlined fears about the growing number of threats against members of Congress and the woeful lack of security around those lawmakers.Guest: Catie Edmondson, a congressional correspondent for The New York Times.Background reading: A trail of strained relationships. An itinerant life that included a stint living in a storage unit. A personality that was “consumed by darkness.” Who is the man accused of attacking Mr. Pelosi?The assault at the Pelosi home comes as threats against members of Congress have increased in recent years.For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.